Home / 1,925.85-2,657.37-1,129.11

Finding the Fourth Proportional to 1,925.85, 2,657.37 and 1,129.11

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Solution

The fourth proportional to 1,925.85, 2,657.37 and 1,129.11 is: 1,557.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.85 : 2,657.37 = 1,129.11 : x
  2. Step 2: Convert to fraction form
    1,925.85/2,657.37 = 1,129.11/x
  3. Step 3: Cross multiply
    1,925.85x = 2,657.37 × 1,129.11
  4. Step 4: Simplify right side
    1,925.85x = 3,000,463.04
  5. Step 5: Solve for x
    x = 3,000,463.04/1,925.85
  6. Step 6: Final answer
    x = 1,557.99

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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.