Home / 1,671.26-2,306.34-972.76

Finding the Fourth Proportional to 1,671.26, 2,306.34 and 972.76

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Solution

The fourth proportional to 1,671.26, 2,306.34 and 972.76 is: 1,342.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.26 : 2,306.34 = 972.76 : x
  2. Step 2: Convert to fraction form
    1,671.26/2,306.34 = 972.76/x
  3. Step 3: Cross multiply
    1,671.26x = 2,306.34 × 972.76
  4. Step 4: Simplify right side
    1,671.26x = 2,243,515.30
  5. Step 5: Solve for x
    x = 2,243,515.30/1,671.26
  6. Step 6: Final answer
    x = 1,342.41

Related Problems

Find fourth proportional to 835.63, 1,153.17 and 486.38
Half scale
Find fourth proportional to 3,342.52, 4,612.68 and 1,945.52
Double scale
Find fourth proportional to 1,672.26, 2,307.72 and 973.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.