Home / 1,685.12-2,325.76-1,267.57

Finding the Fourth Proportional to 1,685.12, 2,325.76 and 1,267.57

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Solution

The fourth proportional to 1,685.12, 2,325.76 and 1,267.57 is: 1,749.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.12 : 2,325.76 = 1,267.57 : x
  2. Step 2: Convert to fraction form
    1,685.12/2,325.76 = 1,267.57/x
  3. Step 3: Cross multiply
    1,685.12x = 2,325.76 × 1,267.57
  4. Step 4: Simplify right side
    1,685.12x = 2,948,051.97
  5. Step 5: Solve for x
    x = 2,948,051.97/1,685.12
  6. Step 6: Final answer
    x = 1,749.46

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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.