Home / 4,319.60-6,479.40-1,979.60

Finding the Fourth Proportional to 4,319.60, 6,479.40 and 1,979.60

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Solution

The fourth proportional to 4,319.60, 6,479.40 and 1,979.60 is: 2,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,319.60 : 6,479.40 = 1,979.60 : x
  2. Step 2: Convert to fraction form
    4,319.60/6,479.40 = 1,979.60/x
  3. Step 3: Cross multiply
    4,319.60x = 6,479.40 × 1,979.60
  4. Step 4: Simplify right side
    4,319.60x = 12,826,620.24
  5. Step 5: Solve for x
    x = 12,826,620.24/4,319.60
  6. Step 6: Final answer
    x = 2,969.40

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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.