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Finding the Fourth Proportional to 9,393.40, 12,959.14 and 5,615.16

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Solution

The fourth proportional to 9,393.40, 12,959.14 and 5,615.16 is: 7,746.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,393.40 : 12,959.14 = 5,615.16 : x
  2. Step 2: Convert to fraction form
    9,393.40/12,959.14 = 5,615.16/x
  3. Step 3: Cross multiply
    9,393.40x = 12,959.14 × 5,615.16
  4. Step 4: Simplify right side
    9,393.40x = 72,767,644.56
  5. Step 5: Solve for x
    x = 72,767,644.56/9,393.40
  6. Step 6: Final answer
    x = 7,746.68

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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.