Home / 6,921.12-9,551.85-4,089.41

Finding the Fourth Proportional to 6,921.12, 9,551.85 and 4,089.41

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Solution

The fourth proportional to 6,921.12, 9,551.85 and 4,089.41 is: 5,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.12 : 9,551.85 = 4,089.41 : x
  2. Step 2: Convert to fraction form
    6,921.12/9,551.85 = 4,089.41/x
  3. Step 3: Cross multiply
    6,921.12x = 9,551.85 × 4,089.41
  4. Step 4: Simplify right side
    6,921.12x = 39,061,454.79
  5. Step 5: Solve for x
    x = 39,061,454.79/6,921.12
  6. Step 6: Final answer
    x = 5,643.80

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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.