Home / 2,580.12-3,560.58-1,401.20

Finding the Fourth Proportional to 2,580.12, 3,560.58 and 1,401.20

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Solution

The fourth proportional to 2,580.12, 3,560.58 and 1,401.20 is: 1,933.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.12 : 3,560.58 = 1,401.20 : x
  2. Step 2: Convert to fraction form
    2,580.12/3,560.58 = 1,401.20/x
  3. Step 3: Cross multiply
    2,580.12x = 3,560.58 × 1,401.20
  4. Step 4: Simplify right side
    2,580.12x = 4,989,084.70
  5. Step 5: Solve for x
    x = 4,989,084.70/2,580.12
  6. Step 6: Final answer
    x = 1,933.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.