Home / 2,987.20-4,483.12-2,069.19

Finding the Fourth Proportional to 2,987.20, 4,483.12 and 2,069.19

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Solution

The fourth proportional to 2,987.20, 4,483.12 and 2,069.19 is: 3,105.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.20 : 4,483.12 = 2,069.19 : x
  2. Step 2: Convert to fraction form
    2,987.20/4,483.12 = 2,069.19/x
  3. Step 3: Cross multiply
    2,987.20x = 4,483.12 × 2,069.19
  4. Step 4: Simplify right side
    2,987.20x = 9,276,421.90
  5. Step 5: Solve for x
    x = 9,276,421.90/2,987.20
  6. Step 6: Final answer
    x = 3,105.39

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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.