Home / 2,539.86-3,505.30-1,421.08

Finding the Fourth Proportional to 2,539.86, 3,505.30 and 1,421.08

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Solution

The fourth proportional to 2,539.86, 3,505.30 and 1,421.08 is: 1,961.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.86 : 3,505.30 = 1,421.08 : x
  2. Step 2: Convert to fraction form
    2,539.86/3,505.30 = 1,421.08/x
  3. Step 3: Cross multiply
    2,539.86x = 3,505.30 × 1,421.08
  4. Step 4: Simplify right side
    2,539.86x = 4,981,312.55
  5. Step 5: Solve for x
    x = 4,981,312.55/2,539.86
  6. Step 6: Final answer
    x = 1,961.25

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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.