Home / 1,931.71-2,666.10-1,092.45

Finding the Fourth Proportional to 1,931.71, 2,666.10 and 1,092.45

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Solution

The fourth proportional to 1,931.71, 2,666.10 and 1,092.45 is: 1,507.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.71 : 2,666.10 = 1,092.45 : x
  2. Step 2: Convert to fraction form
    1,931.71/2,666.10 = 1,092.45/x
  3. Step 3: Cross multiply
    1,931.71x = 2,666.10 × 1,092.45
  4. Step 4: Simplify right side
    1,931.71x = 2,912,580.95
  5. Step 5: Solve for x
    x = 2,912,580.95/1,931.71
  6. Step 6: Final answer
    x = 1,507.77

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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.