Home / 6,607.92-9,117.72-3,956.40

Finding the Fourth Proportional to 6,607.92, 9,117.72 and 3,956.40

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Solution

The fourth proportional to 6,607.92, 9,117.72 and 3,956.40 is: 5,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,607.92 : 9,117.72 = 3,956.40 : x
  2. Step 2: Convert to fraction form
    6,607.92/9,117.72 = 3,956.40/x
  3. Step 3: Cross multiply
    6,607.92x = 9,117.72 × 3,956.40
  4. Step 4: Simplify right side
    6,607.92x = 36,073,347.41
  5. Step 5: Solve for x
    x = 36,073,347.41/6,607.92
  6. Step 6: Final answer
    x = 5,459.11

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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.