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Finding the Fourth Proportional to 7,389.66, 10,249.99 and 7,123.68

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Solution

The fourth proportional to 7,389.66, 10,249.99 and 7,123.68 is: 9,881.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,389.66 : 10,249.99 = 7,123.68 : x
  2. Step 2: Convert to fraction form
    7,389.66/10,249.99 = 7,123.68/x
  3. Step 3: Cross multiply
    7,389.66x = 10,249.99 × 7,123.68
  4. Step 4: Simplify right side
    7,389.66x = 73,017,648.76
  5. Step 5: Solve for x
    x = 73,017,648.76/7,389.66
  6. Step 6: Final answer
    x = 9,881.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.