Home / 2,490.22-3,435.07-1,557.10

Finding the Fourth Proportional to 2,490.22, 3,435.07 and 1,557.10

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Solution

The fourth proportional to 2,490.22, 3,435.07 and 1,557.10 is: 2,147.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.22 : 3,435.07 = 1,557.10 : x
  2. Step 2: Convert to fraction form
    2,490.22/3,435.07 = 1,557.10/x
  3. Step 3: Cross multiply
    2,490.22x = 3,435.07 × 1,557.10
  4. Step 4: Simplify right side
    2,490.22x = 5,348,747.50
  5. Step 5: Solve for x
    x = 5,348,747.50/2,490.22
  6. Step 6: Final answer
    x = 2,147.90

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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.