Home / 1,129.50-1,560.66-932.67

Finding the Fourth Proportional to 1,129.50, 1,560.66 and 932.67

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Solution

The fourth proportional to 1,129.50, 1,560.66 and 932.67 is: 1,288.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129.50 : 1,560.66 = 932.67 : x
  2. Step 2: Convert to fraction form
    1,129.50/1,560.66 = 932.67/x
  3. Step 3: Cross multiply
    1,129.50x = 1,560.66 × 932.67
  4. Step 4: Simplify right side
    1,129.50x = 1,455,580.76
  5. Step 5: Solve for x
    x = 1,455,580.76/1,129.50
  6. Step 6: Final answer
    x = 1,288.69

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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.