Home / 2,920.12-4,371.72-2,271.40

Finding the Fourth Proportional to 2,920.12, 4,371.72 and 2,271.40

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Solution

The fourth proportional to 2,920.12, 4,371.72 and 2,271.40 is: 3,400.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.12 : 4,371.72 = 2,271.40 : x
  2. Step 2: Convert to fraction form
    2,920.12/4,371.72 = 2,271.40/x
  3. Step 3: Cross multiply
    2,920.12x = 4,371.72 × 2,271.40
  4. Step 4: Simplify right side
    2,920.12x = 9,929,924.81
  5. Step 5: Solve for x
    x = 9,929,924.81/2,920.12
  6. Step 6: Final answer
    x = 3,400.52

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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.