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Finding the Fourth Proportional to 9,342.42, 12,889.98 and 6,506.64

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Solution

The fourth proportional to 9,342.42, 12,889.98 and 6,506.64 is: 8,977.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,342.42 : 12,889.98 = 6,506.64 : x
  2. Step 2: Convert to fraction form
    9,342.42/12,889.98 = 6,506.64/x
  3. Step 3: Cross multiply
    9,342.42x = 12,889.98 × 6,506.64
  4. Step 4: Simplify right side
    9,342.42x = 83,870,459.47
  5. Step 5: Solve for x
    x = 83,870,459.47/9,342.42
  6. Step 6: Final answer
    x = 8,977.38

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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.