Home / 1,948.05-2,688.19-1,161.95

Finding the Fourth Proportional to 1,948.05, 2,688.19 and 1,161.95

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Solution

The fourth proportional to 1,948.05, 2,688.19 and 1,161.95 is: 1,603.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.05 : 2,688.19 = 1,161.95 : x
  2. Step 2: Convert to fraction form
    1,948.05/2,688.19 = 1,161.95/x
  3. Step 3: Cross multiply
    1,948.05x = 2,688.19 × 1,161.95
  4. Step 4: Simplify right side
    1,948.05x = 3,123,526.02
  5. Step 5: Solve for x
    x = 3,123,526.02/1,948.05
  6. Step 6: Final answer
    x = 1,603.41

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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.