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Finding the Fourth Proportional to 7,398.95, 10,208.97 and 5,160.00

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Solution

The fourth proportional to 7,398.95, 10,208.97 and 5,160.00 is: 7,119.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,398.95 : 10,208.97 = 5,160.00 : x
  2. Step 2: Convert to fraction form
    7,398.95/10,208.97 = 5,160.00/x
  3. Step 3: Cross multiply
    7,398.95x = 10,208.97 × 5,160.00
  4. Step 4: Simplify right side
    7,398.95x = 52,678,323.48
  5. Step 5: Solve for x
    x = 52,678,323.48/7,398.95
  6. Step 6: Final answer
    x = 7,119.71

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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.