Home / 1,275.35-1,897.49-1,271.03

Finding the Fourth Proportional to 1,275.35, 1,897.49 and 1,271.03

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Solution

The fourth proportional to 1,275.35, 1,897.49 and 1,271.03 is: 1,891.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.35 : 1,897.49 = 1,271.03 : x
  2. Step 2: Convert to fraction form
    1,275.35/1,897.49 = 1,271.03/x
  3. Step 3: Cross multiply
    1,275.35x = 1,897.49 × 1,271.03
  4. Step 4: Simplify right side
    1,275.35x = 2,411,760.40
  5. Step 5: Solve for x
    x = 2,411,760.40/1,275.35
  6. Step 6: Final answer
    x = 1,891.07

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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.