Home / 3,124.68-4,686.78-1,478.76

Finding the Fourth Proportional to 3,124.68, 4,686.78 and 1,478.76

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Solution

The fourth proportional to 3,124.68, 4,686.78 and 1,478.76 is: 2,218.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.68 : 4,686.78 = 1,478.76 : x
  2. Step 2: Convert to fraction form
    3,124.68/4,686.78 = 1,478.76/x
  3. Step 3: Cross multiply
    3,124.68x = 4,686.78 × 1,478.76
  4. Step 4: Simplify right side
    3,124.68x = 6,930,622.79
  5. Step 5: Solve for x
    x = 6,930,622.79/3,124.68
  6. Step 6: Final answer
    x = 2,218.03

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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.