Home / 2,151.53-3,227.63-918.95

Finding the Fourth Proportional to 2,151.53, 3,227.63 and 918.95

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Solution

The fourth proportional to 2,151.53, 3,227.63 and 918.95 is: 1,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.53 : 3,227.63 = 918.95 : x
  2. Step 2: Convert to fraction form
    2,151.53/3,227.63 = 918.95/x
  3. Step 3: Cross multiply
    2,151.53x = 3,227.63 × 918.95
  4. Step 4: Simplify right side
    2,151.53x = 2,966,009.86
  5. Step 5: Solve for x
    x = 2,966,009.86/2,151.53
  6. Step 6: Final answer
    x = 1,378.56

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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.