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Finding the Fourth Proportional to 9,321.54, 12,862.36 and 5,342.01

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Solution

The fourth proportional to 9,321.54, 12,862.36 and 5,342.01 is: 7,371.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.54 : 12,862.36 = 5,342.01 : x
  2. Step 2: Convert to fraction form
    9,321.54/12,862.36 = 5,342.01/x
  3. Step 3: Cross multiply
    9,321.54x = 12,862.36 × 5,342.01
  4. Step 4: Simplify right side
    9,321.54x = 68,710,855.74
  5. Step 5: Solve for x
    x = 68,710,855.74/9,321.54
  6. Step 6: Final answer
    x = 7,371.19

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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.