Home / 5,298.71-7,948.53-2,178.90

Finding the Fourth Proportional to 5,298.71, 7,948.53 and 2,178.90

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Solution

The fourth proportional to 5,298.71, 7,948.53 and 2,178.90 is: 3,268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,298.71 : 7,948.53 = 2,178.90 : x
  2. Step 2: Convert to fraction form
    5,298.71/7,948.53 = 2,178.90/x
  3. Step 3: Cross multiply
    5,298.71x = 7,948.53 × 2,178.90
  4. Step 4: Simplify right side
    5,298.71x = 17,319,052.02
  5. Step 5: Solve for x
    x = 17,319,052.02/5,298.71
  6. Step 6: Final answer
    x = 3,268.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.