Home / 5,315.60-7,979.34-4,763.72

Finding the Fourth Proportional to 5,315.60, 7,979.34 and 4,763.72

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Solution

The fourth proportional to 5,315.60, 7,979.34 and 4,763.72 is: 7,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.60 : 7,979.34 = 4,763.72 : x
  2. Step 2: Convert to fraction form
    5,315.60/7,979.34 = 4,763.72/x
  3. Step 3: Cross multiply
    5,315.60x = 7,979.34 × 4,763.72
  4. Step 4: Simplify right side
    5,315.60x = 38,011,341.54
  5. Step 5: Solve for x
    x = 38,011,341.54/5,315.60
  6. Step 6: Final answer
    x = 7,150.90

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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.