Home / 8,587.63-12,879.51-5,423.56

Finding the Fourth Proportional to 8,587.63, 12,879.51 and 5,423.56

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Solution

The fourth proportional to 8,587.63, 12,879.51 and 5,423.56 is: 8,134.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.63 : 12,879.51 = 5,423.56 : x
  2. Step 2: Convert to fraction form
    8,587.63/12,879.51 = 5,423.56/x
  3. Step 3: Cross multiply
    8,587.63x = 12,879.51 × 5,423.56
  4. Step 4: Simplify right side
    8,587.63x = 69,852,795.26
  5. Step 5: Solve for x
    x = 69,852,795.26/8,587.63
  6. Step 6: Final answer
    x = 8,134.12

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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.