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Finding the Fourth Proportional to 6,985.72, 10,520.17 and 6,300.28

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Solution

The fourth proportional to 6,985.72, 10,520.17 and 6,300.28 is: 9,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.72 : 10,520.17 = 6,300.28 : x
  2. Step 2: Convert to fraction form
    6,985.72/10,520.17 = 6,300.28/x
  3. Step 3: Cross multiply
    6,985.72x = 10,520.17 × 6,300.28
  4. Step 4: Simplify right side
    6,985.72x = 66,280,016.65
  5. Step 5: Solve for x
    x = 66,280,016.65/6,985.72
  6. Step 6: Final answer
    x = 9,487.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.