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Finding the Fourth Proportional to 7,903.80, 11,842.90 and 6,598.20

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Solution

The fourth proportional to 7,903.80, 11,842.90 and 6,598.20 is: 9,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.80 : 11,842.90 = 6,598.20 : x
  2. Step 2: Convert to fraction form
    7,903.80/11,842.90 = 6,598.20/x
  3. Step 3: Cross multiply
    7,903.80x = 11,842.90 × 6,598.20
  4. Step 4: Simplify right side
    7,903.80x = 78,141,822.78
  5. Step 5: Solve for x
    x = 78,141,822.78/7,903.80
  6. Step 6: Final answer
    x = 9,886.61

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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.