Home / 8,582.10-12,888.99-5,140.50

Finding the Fourth Proportional to 8,582.10, 12,888.99 and 5,140.50

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Solution

The fourth proportional to 8,582.10, 12,888.99 and 5,140.50 is: 7,720.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,582.10 : 12,888.99 = 5,140.50 : x
  2. Step 2: Convert to fraction form
    8,582.10/12,888.99 = 5,140.50/x
  3. Step 3: Cross multiply
    8,582.10x = 12,888.99 × 5,140.50
  4. Step 4: Simplify right side
    8,582.10x = 66,255,853.10
  5. Step 5: Solve for x
    x = 66,255,853.10/8,582.10
  6. Step 6: Final answer
    x = 7,720.24

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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.