Home / 8,290.24-11,417.34-6,880

Finding the Fourth Proportional to 8,290.24, 11,417.34 and 6,880

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Solution

The fourth proportional to 8,290.24, 11,417.34 and 6,880 is: 9,475.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.24 : 11,417.34 = 6,880 : x
  2. Step 2: Convert to fraction form
    8,290.24/11,417.34 = 6,880/x
  3. Step 3: Cross multiply
    8,290.24x = 11,417.34 × 6,880
  4. Step 4: Simplify right side
    8,290.24x = 78,551,299.20
  5. Step 5: Solve for x
    x = 78,551,299.20/8,290.24
  6. Step 6: Final answer
    x = 9,475.15

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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.