Home / 8,319.42-12,442.66-7,240.50

Finding the Fourth Proportional to 8,319.42, 12,442.66 and 7,240.50

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Solution

The fourth proportional to 8,319.42, 12,442.66 and 7,240.50 is: 10,829.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.42 : 12,442.66 = 7,240.50 : x
  2. Step 2: Convert to fraction form
    8,319.42/12,442.66 = 7,240.50/x
  3. Step 3: Cross multiply
    8,319.42x = 12,442.66 × 7,240.50
  4. Step 4: Simplify right side
    8,319.42x = 90,091,079.73
  5. Step 5: Solve for x
    x = 90,091,079.73/8,319.42
  6. Step 6: Final answer
    x = 10,829.01

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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.