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Finding the Fourth Proportional to 9,420, 13,001.92 and 5,440.52

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Solution

The fourth proportional to 9,420, 13,001.92 and 5,440.52 is: 7,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420 : 13,001.92 = 5,440.52 : x
  2. Step 2: Convert to fraction form
    9,420/13,001.92 = 5,440.52/x
  3. Step 3: Cross multiply
    9,420x = 13,001.92 × 5,440.52
  4. Step 4: Simplify right side
    9,420x = 70,737,205.80
  5. Step 5: Solve for x
    x = 70,737,205.80/9,420
  6. Step 6: Final answer
    x = 7,509.26

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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.