Home / 5,615.60-8,423.40-2,699.60

Finding the Fourth Proportional to 5,615.60, 8,423.40 and 2,699.60

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Solution

The fourth proportional to 5,615.60, 8,423.40 and 2,699.60 is: 4,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.60 : 8,423.40 = 2,699.60 : x
  2. Step 2: Convert to fraction form
    5,615.60/8,423.40 = 2,699.60/x
  3. Step 3: Cross multiply
    5,615.60x = 8,423.40 × 2,699.60
  4. Step 4: Simplify right side
    5,615.60x = 22,739,810.64
  5. Step 5: Solve for x
    x = 22,739,810.64/5,615.60
  6. Step 6: Final answer
    x = 4,049.40

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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.