Home / 5,518.40-8,280.36-3,437.76

Finding the Fourth Proportional to 5,518.40, 8,280.36 and 3,437.76

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Solution

The fourth proportional to 5,518.40, 8,280.36 and 3,437.76 is: 5,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.40 : 8,280.36 = 3,437.76 : x
  2. Step 2: Convert to fraction form
    5,518.40/8,280.36 = 3,437.76/x
  3. Step 3: Cross multiply
    5,518.40x = 8,280.36 × 3,437.76
  4. Step 4: Simplify right side
    5,518.40x = 28,465,890.39
  5. Step 5: Solve for x
    x = 28,465,890.39/5,518.40
  6. Step 6: Final answer
    x = 5,158.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.