Home / 1,480.42-2,043.72-921.07

Finding the Fourth Proportional to 1,480.42, 2,043.72 and 921.07

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Solution

The fourth proportional to 1,480.42, 2,043.72 and 921.07 is: 1,271.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.42 : 2,043.72 = 921.07 : x
  2. Step 2: Convert to fraction form
    1,480.42/2,043.72 = 921.07/x
  3. Step 3: Cross multiply
    1,480.42x = 2,043.72 × 921.07
  4. Step 4: Simplify right side
    1,480.42x = 1,882,394.36
  5. Step 5: Solve for x
    x = 1,882,394.36/1,480.42
  6. Step 6: Final answer
    x = 1,271.53

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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.