Home / 5,417.95-8,128.14-1,720.30

Finding the Fourth Proportional to 5,417.95, 8,128.14 and 1,720.30

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Solution

The fourth proportional to 5,417.95, 8,128.14 and 1,720.30 is: 2,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.95 : 8,128.14 = 1,720.30 : x
  2. Step 2: Convert to fraction form
    5,417.95/8,128.14 = 1,720.30/x
  3. Step 3: Cross multiply
    5,417.95x = 8,128.14 × 1,720.30
  4. Step 4: Simplify right side
    5,417.95x = 13,982,839.24
  5. Step 5: Solve for x
    x = 13,982,839.24/5,417.95
  6. Step 6: Final answer
    x = 2,580.84

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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.