Home / 8,130.04-12,189.15-5,491.00

Finding the Fourth Proportional to 8,130.04, 12,189.15 and 5,491.00

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Solution

The fourth proportional to 8,130.04, 12,189.15 and 5,491.00 is: 8,232.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.04 : 12,189.15 = 5,491.00 : x
  2. Step 2: Convert to fraction form
    8,130.04/12,189.15 = 5,491.00/x
  3. Step 3: Cross multiply
    8,130.04x = 12,189.15 × 5,491.00
  4. Step 4: Simplify right side
    8,130.04x = 66,930,631.86
  5. Step 5: Solve for x
    x = 66,930,631.86/8,130.04
  6. Step 6: Final answer
    x = 8,232.51

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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.