Home / 2,861.48-3,948.36-1,742.20

Finding the Fourth Proportional to 2,861.48, 3,948.36 and 1,742.20

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Solution

The fourth proportional to 2,861.48, 3,948.36 and 1,742.20 is: 2,403.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.48 : 3,948.36 = 1,742.20 : x
  2. Step 2: Convert to fraction form
    2,861.48/3,948.36 = 1,742.20/x
  3. Step 3: Cross multiply
    2,861.48x = 3,948.36 × 1,742.20
  4. Step 4: Simplify right side
    2,861.48x = 6,878,832.79
  5. Step 5: Solve for x
    x = 6,878,832.79/2,861.48
  6. Step 6: Final answer
    x = 2,403.94

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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.