Home / 1,397.24-1,928.29-924.31

Finding the Fourth Proportional to 1,397.24, 1,928.29 and 924.31

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Solution

The fourth proportional to 1,397.24, 1,928.29 and 924.31 is: 1,275.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397.24 : 1,928.29 = 924.31 : x
  2. Step 2: Convert to fraction form
    1,397.24/1,928.29 = 924.31/x
  3. Step 3: Cross multiply
    1,397.24x = 1,928.29 × 924.31
  4. Step 4: Simplify right side
    1,397.24x = 1,782,333.11
  5. Step 5: Solve for x
    x = 1,782,333.11/1,397.24
  6. Step 6: Final answer
    x = 1,275.61

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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.