Home / 1,949.13-2,689.80-1,152.45

Finding the Fourth Proportional to 1,949.13, 2,689.80 and 1,152.45

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Solution

The fourth proportional to 1,949.13, 2,689.80 and 1,152.45 is: 1,590.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.13 : 2,689.80 = 1,152.45 : x
  2. Step 2: Convert to fraction form
    1,949.13/2,689.80 = 1,152.45/x
  3. Step 3: Cross multiply
    1,949.13x = 2,689.80 × 1,152.45
  4. Step 4: Simplify right side
    1,949.13x = 3,099,860.01
  5. Step 5: Solve for x
    x = 3,099,860.01/1,949.13
  6. Step 6: Final answer
    x = 1,590.38

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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.