Home / 1,347.03-2,021.15-1,288.71

Finding the Fourth Proportional to 1,347.03, 2,021.15 and 1,288.71

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Solution

The fourth proportional to 1,347.03, 2,021.15 and 1,288.71 is: 1,933.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.03 : 2,021.15 = 1,288.71 : x
  2. Step 2: Convert to fraction form
    1,347.03/2,021.15 = 1,288.71/x
  3. Step 3: Cross multiply
    1,347.03x = 2,021.15 × 1,288.71
  4. Step 4: Simplify right side
    1,347.03x = 2,604,679.44
  5. Step 5: Solve for x
    x = 2,604,679.44/1,347.03
  6. Step 6: Final answer
    x = 1,933.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.