Home / 1,557.10-2,337.20-1,118.86

Finding the Fourth Proportional to 1,557.10, 2,337.20 and 1,118.86

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Solution

The fourth proportional to 1,557.10, 2,337.20 and 1,118.86 is: 1,679.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.10 : 2,337.20 = 1,118.86 : x
  2. Step 2: Convert to fraction form
    1,557.10/2,337.20 = 1,118.86/x
  3. Step 3: Cross multiply
    1,557.10x = 2,337.20 × 1,118.86
  4. Step 4: Simplify right side
    1,557.10x = 2,615,011.79
  5. Step 5: Solve for x
    x = 2,615,011.79/1,557.10
  6. Step 6: Final answer
    x = 1,679.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.