Home / 9,631.80-13,280.22-6,642.90

Finding the Fourth Proportional to 9,631.80, 13,280.22 and 6,642.90

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Solution

The fourth proportional to 9,631.80, 13,280.22 and 6,642.90 is: 9,159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,631.80 : 13,280.22 = 6,642.90 : x
  2. Step 2: Convert to fraction form
    9,631.80/13,280.22 = 6,642.90/x
  3. Step 3: Cross multiply
    9,631.80x = 13,280.22 × 6,642.90
  4. Step 4: Simplify right side
    9,631.80x = 88,219,173.44
  5. Step 5: Solve for x
    x = 88,219,173.44/9,631.80
  6. Step 6: Final answer
    x = 9,159.16

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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.