Home / 1,948.20-2,901.63-1,938.78

Finding the Fourth Proportional to 1,948.20, 2,901.63 and 1,938.78

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Solution

The fourth proportional to 1,948.20, 2,901.63 and 1,938.78 is: 2,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.20 : 2,901.63 = 1,938.78 : x
  2. Step 2: Convert to fraction form
    1,948.20/2,901.63 = 1,938.78/x
  3. Step 3: Cross multiply
    1,948.20x = 2,901.63 × 1,938.78
  4. Step 4: Simplify right side
    1,948.20x = 5,625,622.21
  5. Step 5: Solve for x
    x = 5,625,622.21/1,948.20
  6. Step 6: Final answer
    x = 2,887.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.