Home / 1,720.80-2,581.60-610.16

Finding the Fourth Proportional to 1,720.80, 2,581.60 and 610.16

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Solution

The fourth proportional to 1,720.80, 2,581.60 and 610.16 is: 915.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.80 : 2,581.60 = 610.16 : x
  2. Step 2: Convert to fraction form
    1,720.80/2,581.60 = 610.16/x
  3. Step 3: Cross multiply
    1,720.80x = 2,581.60 × 610.16
  4. Step 4: Simplify right side
    1,720.80x = 1,575,193.15
  5. Step 5: Solve for x
    x = 1,575,193.15/1,720.80
  6. Step 6: Final answer
    x = 915.38

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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.