Home / 5,615.83-8,423.76-1,720.21

Finding the Fourth Proportional to 5,615.83, 8,423.76 and 1,720.21

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Solution

The fourth proportional to 5,615.83, 8,423.76 and 1,720.21 is: 2,580.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.83 : 8,423.76 = 1,720.21 : x
  2. Step 2: Convert to fraction form
    5,615.83/8,423.76 = 1,720.21/x
  3. Step 3: Cross multiply
    5,615.83x = 8,423.76 × 1,720.21
  4. Step 4: Simplify right side
    5,615.83x = 14,490,636.19
  5. Step 5: Solve for x
    x = 14,490,636.19/5,615.83
  6. Step 6: Final answer
    x = 2,580.32

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Similar ratio
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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.