Home / 8,045.20-11,107.56-7,008.40

Finding the Fourth Proportional to 8,045.20, 11,107.56 and 7,008.40

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Solution

The fourth proportional to 8,045.20, 11,107.56 and 7,008.40 is: 9,676.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,045.20 : 11,107.56 = 7,008.40 : x
  2. Step 2: Convert to fraction form
    8,045.20/11,107.56 = 7,008.40/x
  3. Step 3: Cross multiply
    8,045.20x = 11,107.56 × 7,008.40
  4. Step 4: Simplify right side
    8,045.20x = 77,846,223.50
  5. Step 5: Solve for x
    x = 77,846,223.50/8,045.20
  6. Step 6: Final answer
    x = 9,676.11

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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.