Home / 3,390.40-5,077.28-2,347.68

Finding the Fourth Proportional to 3,390.40, 5,077.28 and 2,347.68

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Solution

The fourth proportional to 3,390.40, 5,077.28 and 2,347.68 is: 3,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.40 : 5,077.28 = 2,347.68 : x
  2. Step 2: Convert to fraction form
    3,390.40/5,077.28 = 2,347.68/x
  3. Step 3: Cross multiply
    3,390.40x = 5,077.28 × 2,347.68
  4. Step 4: Simplify right side
    3,390.40x = 11,919,828.71
  5. Step 5: Solve for x
    x = 11,919,828.71/3,390.40
  6. Step 6: Final answer
    x = 3,515.76

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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.