Home / 1,938.01-2,675.36-1,239.79

Finding the Fourth Proportional to 1,938.01, 2,675.36 and 1,239.79

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Solution

The fourth proportional to 1,938.01, 2,675.36 and 1,239.79 is: 1,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.01 : 2,675.36 = 1,239.79 : x
  2. Step 2: Convert to fraction form
    1,938.01/2,675.36 = 1,239.79/x
  3. Step 3: Cross multiply
    1,938.01x = 2,675.36 × 1,239.79
  4. Step 4: Simplify right side
    1,938.01x = 3,316,865.00
  5. Step 5: Solve for x
    x = 3,316,865.00/1,938.01
  6. Step 6: Final answer
    x = 1,711.48

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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.