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Finding the Fourth Proportional to 7,062.99, 9,718.14 and 6,479.79

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Solution

The fourth proportional to 7,062.99, 9,718.14 and 6,479.79 is: 8,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.99 : 9,718.14 = 6,479.79 : x
  2. Step 2: Convert to fraction form
    7,062.99/9,718.14 = 6,479.79/x
  3. Step 3: Cross multiply
    7,062.99x = 9,718.14 × 6,479.79
  4. Step 4: Simplify right side
    7,062.99x = 62,971,506.39
  5. Step 5: Solve for x
    x = 62,971,506.39/7,062.99
  6. Step 6: Final answer
    x = 8,915.70

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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.