Home / 3,114.79-4,298.40-1,788.55

Finding the Fourth Proportional to 3,114.79, 4,298.40 and 1,788.55

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Solution

The fourth proportional to 3,114.79, 4,298.40 and 1,788.55 is: 2,468.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.79 : 4,298.40 = 1,788.55 : x
  2. Step 2: Convert to fraction form
    3,114.79/4,298.40 = 1,788.55/x
  3. Step 3: Cross multiply
    3,114.79x = 4,298.40 × 1,788.55
  4. Step 4: Simplify right side
    3,114.79x = 7,687,892.57
  5. Step 5: Solve for x
    x = 7,687,892.57/3,114.79
  6. Step 6: Final answer
    x = 2,468.19

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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.