Home / 5,615.45-8,422.83-1,666.55

Finding the Fourth Proportional to 5,615.45, 8,422.83 and 1,666.55

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Solution

The fourth proportional to 5,615.45, 8,422.83 and 1,666.55 is: 2,499.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.45 : 8,422.83 = 1,666.55 : x
  2. Step 2: Convert to fraction form
    5,615.45/8,422.83 = 1,666.55/x
  3. Step 3: Cross multiply
    5,615.45x = 8,422.83 × 1,666.55
  4. Step 4: Simplify right side
    5,615.45x = 14,037,025.22
  5. Step 5: Solve for x
    x = 14,037,025.22/5,615.45
  6. Step 6: Final answer
    x = 2,499.72

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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.