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Finding the Fourth Proportional to 6,663.69, 9,985.01 and 4,319.55

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Solution

The fourth proportional to 6,663.69, 9,985.01 and 4,319.55 is: 6,472.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.69 : 9,985.01 = 4,319.55 : x
  2. Step 2: Convert to fraction form
    6,663.69/9,985.01 = 4,319.55/x
  3. Step 3: Cross multiply
    6,663.69x = 9,985.01 × 4,319.55
  4. Step 4: Simplify right side
    6,663.69x = 43,130,728.35
  5. Step 5: Solve for x
    x = 43,130,728.35/6,663.69
  6. Step 6: Final answer
    x = 6,472.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.