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Finding the Fourth Proportional to 7,120.12, 9,824.99 and 4,248.32

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Solution

The fourth proportional to 7,120.12, 9,824.99 and 4,248.32 is: 5,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.12 : 9,824.99 = 4,248.32 : x
  2. Step 2: Convert to fraction form
    7,120.12/9,824.99 = 4,248.32/x
  3. Step 3: Cross multiply
    7,120.12x = 9,824.99 × 4,248.32
  4. Step 4: Simplify right side
    7,120.12x = 41,739,663.01
  5. Step 5: Solve for x
    x = 41,739,663.01/7,120.12
  6. Step 6: Final answer
    x = 5,862.22

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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.