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Finding the Fourth Proportional to 6,700.98, 9,988.35 and 6,488.70

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Solution

The fourth proportional to 6,700.98, 9,988.35 and 6,488.70 is: 9,671.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,700.98 : 9,988.35 = 6,488.70 : x
  2. Step 2: Convert to fraction form
    6,700.98/9,988.35 = 6,488.70/x
  3. Step 3: Cross multiply
    6,700.98x = 9,988.35 × 6,488.70
  4. Step 4: Simplify right side
    6,700.98x = 64,811,406.65
  5. Step 5: Solve for x
    x = 64,811,406.65/6,700.98
  6. Step 6: Final answer
    x = 9,671.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.