Home / 8,878.54-12,247.21-5,690.70

Finding the Fourth Proportional to 8,878.54, 12,247.21 and 5,690.70

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Solution

The fourth proportional to 8,878.54, 12,247.21 and 5,690.70 is: 7,849.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.54 : 12,247.21 = 5,690.70 : x
  2. Step 2: Convert to fraction form
    8,878.54/12,247.21 = 5,690.70/x
  3. Step 3: Cross multiply
    8,878.54x = 12,247.21 × 5,690.70
  4. Step 4: Simplify right side
    8,878.54x = 69,695,108.26
  5. Step 5: Solve for x
    x = 69,695,108.26/8,878.54
  6. Step 6: Final answer
    x = 7,849.84

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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.