Home / 8,707.20-13,070.01-5,422.60

Finding the Fourth Proportional to 8,707.20, 13,070.01 and 5,422.60

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Solution

The fourth proportional to 8,707.20, 13,070.01 and 5,422.60 is: 8,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.20 : 13,070.01 = 5,422.60 : x
  2. Step 2: Convert to fraction form
    8,707.20/13,070.01 = 5,422.60/x
  3. Step 3: Cross multiply
    8,707.20x = 13,070.01 × 5,422.60
  4. Step 4: Simplify right side
    8,707.20x = 70,873,368.88
  5. Step 5: Solve for x
    x = 70,873,368.88/8,707.20
  6. Step 6: Final answer
    x = 8,139.63

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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.