Home / 3,111.76-4,291.68-2,271.52

Finding the Fourth Proportional to 3,111.76, 4,291.68 and 2,271.52

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Solution

The fourth proportional to 3,111.76, 4,291.68 and 2,271.52 is: 3,132.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.76 : 4,291.68 = 2,271.52 : x
  2. Step 2: Convert to fraction form
    3,111.76/4,291.68 = 2,271.52/x
  3. Step 3: Cross multiply
    3,111.76x = 4,291.68 × 2,271.52
  4. Step 4: Simplify right side
    3,111.76x = 9,748,636.95
  5. Step 5: Solve for x
    x = 9,748,636.95/3,111.76
  6. Step 6: Final answer
    x = 3,132.84

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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.