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Finding the Fourth Proportional to 8,437.79, 11,645.14 and 7,018.97

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Solution

The fourth proportional to 8,437.79, 11,645.14 and 7,018.97 is: 9,687.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.79 : 11,645.14 = 7,018.97 : x
  2. Step 2: Convert to fraction form
    8,437.79/11,645.14 = 7,018.97/x
  3. Step 3: Cross multiply
    8,437.79x = 11,645.14 × 7,018.97
  4. Step 4: Simplify right side
    8,437.79x = 81,736,888.31
  5. Step 5: Solve for x
    x = 81,736,888.31/8,437.79
  6. Step 6: Final answer
    x = 9,687.00

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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.