Home / 1,931.20-2,665.26-1,134.64

Finding the Fourth Proportional to 1,931.20, 2,665.26 and 1,134.64

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Solution

The fourth proportional to 1,931.20, 2,665.26 and 1,134.64 is: 1,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.20 : 2,665.26 = 1,134.64 : x
  2. Step 2: Convert to fraction form
    1,931.20/2,665.26 = 1,134.64/x
  3. Step 3: Cross multiply
    1,931.20x = 2,665.26 × 1,134.64
  4. Step 4: Simplify right side
    1,931.20x = 3,024,110.61
  5. Step 5: Solve for x
    x = 3,024,110.61/1,931.20
  6. Step 6: Final answer
    x = 1,565.92

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1.5x scale

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.