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Finding the Fourth Proportional to 7,039.95, 9,703.97 and 5,545.50

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Solution

The fourth proportional to 7,039.95, 9,703.97 and 5,545.50 is: 7,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,039.95 : 9,703.97 = 5,545.50 : x
  2. Step 2: Convert to fraction form
    7,039.95/9,703.97 = 5,545.50/x
  3. Step 3: Cross multiply
    7,039.95x = 9,703.97 × 5,545.50
  4. Step 4: Simplify right side
    7,039.95x = 53,813,337.91
  5. Step 5: Solve for x
    x = 53,813,337.91/7,039.95
  6. Step 6: Final answer
    x = 7,643.99

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1.5x scale

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.