Home / 2,931.29-4,378.17-2,653.22

Finding the Fourth Proportional to 2,931.29, 4,378.17 and 2,653.22

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Solution

The fourth proportional to 2,931.29, 4,378.17 and 2,653.22 is: 3,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.29 : 4,378.17 = 2,653.22 : x
  2. Step 2: Convert to fraction form
    2,931.29/4,378.17 = 2,653.22/x
  3. Step 3: Cross multiply
    2,931.29x = 4,378.17 × 2,653.22
  4. Step 4: Simplify right side
    2,931.29x = 11,616,248.21
  5. Step 5: Solve for x
    x = 11,616,248.21/2,931.29
  6. Step 6: Final answer
    x = 3,962.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.