Home / 3,124.20-4,686.58-1,275.45

Finding the Fourth Proportional to 3,124.20, 4,686.58 and 1,275.45

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Solution

The fourth proportional to 3,124.20, 4,686.58 and 1,275.45 is: 1,913.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.20 : 4,686.58 = 1,275.45 : x
  2. Step 2: Convert to fraction form
    3,124.20/4,686.58 = 1,275.45/x
  3. Step 3: Cross multiply
    3,124.20x = 4,686.58 × 1,275.45
  4. Step 4: Simplify right side
    3,124.20x = 5,977,498.46
  5. Step 5: Solve for x
    x = 5,977,498.46/3,124.20
  6. Step 6: Final answer
    x = 1,913.29

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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.