Home / 5,515.60-8,271.80-1,818.32

Finding the Fourth Proportional to 5,515.60, 8,271.80 and 1,818.32

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Solution

The fourth proportional to 5,515.60, 8,271.80 and 1,818.32 is: 2,726.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.60 : 8,271.80 = 1,818.32 : x
  2. Step 2: Convert to fraction form
    5,515.60/8,271.80 = 1,818.32/x
  3. Step 3: Cross multiply
    5,515.60x = 8,271.80 × 1,818.32
  4. Step 4: Simplify right side
    5,515.60x = 15,040,779.38
  5. Step 5: Solve for x
    x = 15,040,779.38/5,515.60
  6. Step 6: Final answer
    x = 2,726.95

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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.