Home / 7,479.27-10,321.46-4,122.20

Finding the Fourth Proportional to 7,479.27, 10,321.46 and 4,122.20

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Solution

The fourth proportional to 7,479.27, 10,321.46 and 4,122.20 is: 5,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.27 : 10,321.46 = 4,122.20 : x
  2. Step 2: Convert to fraction form
    7,479.27/10,321.46 = 4,122.20/x
  3. Step 3: Cross multiply
    7,479.27x = 10,321.46 × 4,122.20
  4. Step 4: Simplify right side
    7,479.27x = 42,547,148.22
  5. Step 5: Solve for x
    x = 42,547,148.22/7,479.27
  6. Step 6: Final answer
    x = 5,688.68

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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.