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Finding the Fourth Proportional to 6,488.70, 8,952.78 and 3,655.50

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Solution

The fourth proportional to 6,488.70, 8,952.78 and 3,655.50 is: 5,043.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.70 : 8,952.78 = 3,655.50 : x
  2. Step 2: Convert to fraction form
    6,488.70/8,952.78 = 3,655.50/x
  3. Step 3: Cross multiply
    6,488.70x = 8,952.78 × 3,655.50
  4. Step 4: Simplify right side
    6,488.70x = 32,726,887.29
  5. Step 5: Solve for x
    x = 32,726,887.29/6,488.70
  6. Step 6: Final answer
    x = 5,043.67

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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.