Home / 1,948.78-2,688.51-1,192.18

Finding the Fourth Proportional to 1,948.78, 2,688.51 and 1,192.18

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Solution

The fourth proportional to 1,948.78, 2,688.51 and 1,192.18 is: 1,644.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.78 : 2,688.51 = 1,192.18 : x
  2. Step 2: Convert to fraction form
    1,948.78/2,688.51 = 1,192.18/x
  3. Step 3: Cross multiply
    1,948.78x = 2,688.51 × 1,192.18
  4. Step 4: Simplify right side
    1,948.78x = 3,205,187.85
  5. Step 5: Solve for x
    x = 3,205,187.85/1,948.78
  6. Step 6: Final answer
    x = 1,644.72

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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.