Home / 6,386.40-8,813.52-3,591.90

Finding the Fourth Proportional to 6,386.40, 8,813.52 and 3,591.90

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Solution

The fourth proportional to 6,386.40, 8,813.52 and 3,591.90 is: 4,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.40 : 8,813.52 = 3,591.90 : x
  2. Step 2: Convert to fraction form
    6,386.40/8,813.52 = 3,591.90/x
  3. Step 3: Cross multiply
    6,386.40x = 8,813.52 × 3,591.90
  4. Step 4: Simplify right side
    6,386.40x = 31,657,282.49
  5. Step 5: Solve for x
    x = 31,657,282.49/6,386.40
  6. Step 6: Final answer
    x = 4,956.98

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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.