Home / 9,279.45-12,798.57-7,988.10

Finding the Fourth Proportional to 9,279.45, 12,798.57 and 7,988.10

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Solution

The fourth proportional to 9,279.45, 12,798.57 and 7,988.10 is: 11,017.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.45 : 12,798.57 = 7,988.10 : x
  2. Step 2: Convert to fraction form
    9,279.45/12,798.57 = 7,988.10/x
  3. Step 3: Cross multiply
    9,279.45x = 12,798.57 × 7,988.10
  4. Step 4: Simplify right side
    9,279.45x = 102,236,257.02
  5. Step 5: Solve for x
    x = 102,236,257.02/9,279.45
  6. Step 6: Final answer
    x = 11,017.49

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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.