Home / 8,901.70-12,288.27-5,317.90

Finding the Fourth Proportional to 8,901.70, 12,288.27 and 5,317.90

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Solution

The fourth proportional to 8,901.70, 12,288.27 and 5,317.90 is: 7,341.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.70 : 12,288.27 = 5,317.90 : x
  2. Step 2: Convert to fraction form
    8,901.70/12,288.27 = 5,317.90/x
  3. Step 3: Cross multiply
    8,901.70x = 12,288.27 × 5,317.90
  4. Step 4: Simplify right side
    8,901.70x = 65,347,791.03
  5. Step 5: Solve for x
    x = 65,347,791.03/8,901.70
  6. Step 6: Final answer
    x = 7,341.05

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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.