Home / 1,480.80-2,044.02-921.36

Finding the Fourth Proportional to 1,480.80, 2,044.02 and 921.36

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Solution

The fourth proportional to 1,480.80, 2,044.02 and 921.36 is: 1,271.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.80 : 2,044.02 = 921.36 : x
  2. Step 2: Convert to fraction form
    1,480.80/2,044.02 = 921.36/x
  3. Step 3: Cross multiply
    1,480.80x = 2,044.02 × 921.36
  4. Step 4: Simplify right side
    1,480.80x = 1,883,278.27
  5. Step 5: Solve for x
    x = 1,883,278.27/1,480.80
  6. Step 6: Final answer
    x = 1,271.80

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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.