Home / 1,921.10-2,649.02-1,478.04

Finding the Fourth Proportional to 1,921.10, 2,649.02 and 1,478.04

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Solution

The fourth proportional to 1,921.10, 2,649.02 and 1,478.04 is: 2,038.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.10 : 2,649.02 = 1,478.04 : x
  2. Step 2: Convert to fraction form
    1,921.10/2,649.02 = 1,478.04/x
  3. Step 3: Cross multiply
    1,921.10x = 2,649.02 × 1,478.04
  4. Step 4: Simplify right side
    1,921.10x = 3,915,357.52
  5. Step 5: Solve for x
    x = 3,915,357.52/1,921.10
  6. Step 6: Final answer
    x = 2,038.08

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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.