Home / 1,545.18-2,318.34-723.72

Finding the Fourth Proportional to 1,545.18, 2,318.34 and 723.72

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Solution

The fourth proportional to 1,545.18, 2,318.34 and 723.72 is: 1,085.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.18 : 2,318.34 = 723.72 : x
  2. Step 2: Convert to fraction form
    1,545.18/2,318.34 = 723.72/x
  3. Step 3: Cross multiply
    1,545.18x = 2,318.34 × 723.72
  4. Step 4: Simplify right side
    1,545.18x = 1,677,829.02
  5. Step 5: Solve for x
    x = 1,677,829.02/1,545.18
  6. Step 6: Final answer
    x = 1,085.85

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1.5x scale

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.