Home / 6,417.60-8,856.88-4,029.28

Finding the Fourth Proportional to 6,417.60, 8,856.88 and 4,029.28

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Solution

The fourth proportional to 6,417.60, 8,856.88 and 4,029.28 is: 5,560.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,417.60 : 8,856.88 = 4,029.28 : x
  2. Step 2: Convert to fraction form
    6,417.60/8,856.88 = 4,029.28/x
  3. Step 3: Cross multiply
    6,417.60x = 8,856.88 × 4,029.28
  4. Step 4: Simplify right side
    6,417.60x = 35,686,849.45
  5. Step 5: Solve for x
    x = 35,686,849.45/6,417.60
  6. Step 6: Final answer
    x = 5,560.78

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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.