Home / 2,577.90-3,861.45-1,422.30

Finding the Fourth Proportional to 2,577.90, 3,861.45 and 1,422.30

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Solution

The fourth proportional to 2,577.90, 3,861.45 and 1,422.30 is: 2,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.90 : 3,861.45 = 1,422.30 : x
  2. Step 2: Convert to fraction form
    2,577.90/3,861.45 = 1,422.30/x
  3. Step 3: Cross multiply
    2,577.90x = 3,861.45 × 1,422.30
  4. Step 4: Simplify right side
    2,577.90x = 5,492,140.34
  5. Step 5: Solve for x
    x = 5,492,140.34/2,577.90
  6. Step 6: Final answer
    x = 2,130.47

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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.