Home / 8,739.95-12,050.67-7,140.69

Finding the Fourth Proportional to 8,739.95, 12,050.67 and 7,140.69

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Solution

The fourth proportional to 8,739.95, 12,050.67 and 7,140.69 is: 9,845.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.95 : 12,050.67 = 7,140.69 : x
  2. Step 2: Convert to fraction form
    8,739.95/12,050.67 = 7,140.69/x
  3. Step 3: Cross multiply
    8,739.95x = 12,050.67 × 7,140.69
  4. Step 4: Simplify right side
    8,739.95x = 86,050,098.76
  5. Step 5: Solve for x
    x = 86,050,098.76/8,739.95
  6. Step 6: Final answer
    x = 9,845.61

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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.