Home / 1,135.30-1,565.80-1,002.64

Finding the Fourth Proportional to 1,135.30, 1,565.80 and 1,002.64

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Solution

The fourth proportional to 1,135.30, 1,565.80 and 1,002.64 is: 1,382.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.30 : 1,565.80 = 1,002.64 : x
  2. Step 2: Convert to fraction form
    1,135.30/1,565.80 = 1,002.64/x
  3. Step 3: Cross multiply
    1,135.30x = 1,565.80 × 1,002.64
  4. Step 4: Simplify right side
    1,135.30x = 1,569,933.71
  5. Step 5: Solve for x
    x = 1,569,933.71/1,135.30
  6. Step 6: Final answer
    x = 1,382.84

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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.