Home / 1,672.21-2,307.47-926.05

Finding the Fourth Proportional to 1,672.21, 2,307.47 and 926.05

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Solution

The fourth proportional to 1,672.21, 2,307.47 and 926.05 is: 1,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.21 : 2,307.47 = 926.05 : x
  2. Step 2: Convert to fraction form
    1,672.21/2,307.47 = 926.05/x
  3. Step 3: Cross multiply
    1,672.21x = 2,307.47 × 926.05
  4. Step 4: Simplify right side
    1,672.21x = 2,136,822.19
  5. Step 5: Solve for x
    x = 2,136,822.19/1,672.21
  6. Step 6: Final answer
    x = 1,277.85

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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.