Home / 7,545.40-11,329.95-6,390.55

Finding the Fourth Proportional to 7,545.40, 11,329.95 and 6,390.55

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Solution

The fourth proportional to 7,545.40, 11,329.95 and 6,390.55 is: 9,595.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,545.40 : 11,329.95 = 6,390.55 : x
  2. Step 2: Convert to fraction form
    7,545.40/11,329.95 = 6,390.55/x
  3. Step 3: Cross multiply
    7,545.40x = 11,329.95 × 6,390.55
  4. Step 4: Simplify right side
    7,545.40x = 72,404,568.40
  5. Step 5: Solve for x
    x = 72,404,568.40/7,545.40
  6. Step 6: Final answer
    x = 9,595.85

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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.