Home / 3,417.12-5,120.69-2,920.59

Finding the Fourth Proportional to 3,417.12, 5,120.69 and 2,920.59

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Solution

The fourth proportional to 3,417.12, 5,120.69 and 2,920.59 is: 4,376.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,417.12 : 5,120.69 = 2,920.59 : x
  2. Step 2: Convert to fraction form
    3,417.12/5,120.69 = 2,920.59/x
  3. Step 3: Cross multiply
    3,417.12x = 5,120.69 × 2,920.59
  4. Step 4: Simplify right side
    3,417.12x = 14,955,421.40
  5. Step 5: Solve for x
    x = 14,955,421.40/3,417.12
  6. Step 6: Final answer
    x = 4,376.62

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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.