Home / 8,155.90-11,260.38-5,607.90

Finding the Fourth Proportional to 8,155.90, 11,260.38 and 5,607.90

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Solution

The fourth proportional to 8,155.90, 11,260.38 and 5,607.90 is: 7,742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.90 : 11,260.38 = 5,607.90 : x
  2. Step 2: Convert to fraction form
    8,155.90/11,260.38 = 5,607.90/x
  3. Step 3: Cross multiply
    8,155.90x = 11,260.38 × 5,607.90
  4. Step 4: Simplify right side
    8,155.90x = 63,147,085.00
  5. Step 5: Solve for x
    x = 63,147,085.00/8,155.90
  6. Step 6: Final answer
    x = 7,742.50

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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.