Home / 2,931.32-4,045.27-1,605.15

Finding the Fourth Proportional to 2,931.32, 4,045.27 and 1,605.15

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Solution

The fourth proportional to 2,931.32, 4,045.27 and 1,605.15 is: 2,215.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.32 : 4,045.27 = 1,605.15 : x
  2. Step 2: Convert to fraction form
    2,931.32/4,045.27 = 1,605.15/x
  3. Step 3: Cross multiply
    2,931.32x = 4,045.27 × 1,605.15
  4. Step 4: Simplify right side
    2,931.32x = 6,493,265.14
  5. Step 5: Solve for x
    x = 6,493,265.14/2,931.32
  6. Step 6: Final answer
    x = 2,215.13

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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.