Home / 2,045.80-3,068.70-1,124.20

Finding the Fourth Proportional to 2,045.80, 3,068.70 and 1,124.20

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Solution

The fourth proportional to 2,045.80, 3,068.70 and 1,124.20 is: 1,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.80 : 3,068.70 = 1,124.20 : x
  2. Step 2: Convert to fraction form
    2,045.80/3,068.70 = 1,124.20/x
  3. Step 3: Cross multiply
    2,045.80x = 3,068.70 × 1,124.20
  4. Step 4: Simplify right side
    2,045.80x = 3,449,832.54
  5. Step 5: Solve for x
    x = 3,449,832.54/2,045.80
  6. Step 6: Final answer
    x = 1,686.30

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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.