Home / 5,319.40-7,979.10-1,856.20

Finding the Fourth Proportional to 5,319.40, 7,979.10 and 1,856.20

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Solution

The fourth proportional to 5,319.40, 7,979.10 and 1,856.20 is: 2,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.40 : 7,979.10 = 1,856.20 : x
  2. Step 2: Convert to fraction form
    5,319.40/7,979.10 = 1,856.20/x
  3. Step 3: Cross multiply
    5,319.40x = 7,979.10 × 1,856.20
  4. Step 4: Simplify right side
    5,319.40x = 14,810,805.42
  5. Step 5: Solve for x
    x = 14,810,805.42/5,319.40
  6. Step 6: Final answer
    x = 2,784.30

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Similar ratio
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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.