Home / 1,381.01-1,902.56-1,130.87

Finding the Fourth Proportional to 1,381.01, 1,902.56 and 1,130.87

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Solution

The fourth proportional to 1,381.01, 1,902.56 and 1,130.87 is: 1,557.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.01 : 1,902.56 = 1,130.87 : x
  2. Step 2: Convert to fraction form
    1,381.01/1,902.56 = 1,130.87/x
  3. Step 3: Cross multiply
    1,381.01x = 1,902.56 × 1,130.87
  4. Step 4: Simplify right side
    1,381.01x = 2,151,532.86
  5. Step 5: Solve for x
    x = 2,151,532.86/1,381.01
  6. Step 6: Final answer
    x = 1,557.95

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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.