Home / 1,938.76-2,908.15-552.11

Finding the Fourth Proportional to 1,938.76, 2,908.15 and 552.11

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Solution

The fourth proportional to 1,938.76, 2,908.15 and 552.11 is: 828.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.76 : 2,908.15 = 552.11 : x
  2. Step 2: Convert to fraction form
    1,938.76/2,908.15 = 552.11/x
  3. Step 3: Cross multiply
    1,938.76x = 2,908.15 × 552.11
  4. Step 4: Simplify right side
    1,938.76x = 1,605,602.78
  5. Step 5: Solve for x
    x = 1,605,602.78/1,938.76
  6. Step 6: Final answer
    x = 828.16

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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.