Home / 1,291.08-1,935.72-424.92

Finding the Fourth Proportional to 1,291.08, 1,935.72 and 424.92

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Solution

The fourth proportional to 1,291.08, 1,935.72 and 424.92 is: 637.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.08 : 1,935.72 = 424.92 : x
  2. Step 2: Convert to fraction form
    1,291.08/1,935.72 = 424.92/x
  3. Step 3: Cross multiply
    1,291.08x = 1,935.72 × 424.92
  4. Step 4: Simplify right side
    1,291.08x = 822,526.14
  5. Step 5: Solve for x
    x = 822,526.14/1,291.08
  6. Step 6: Final answer
    x = 637.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.