Home / 9,118.68-12,581.46-5,580.60

Finding the Fourth Proportional to 9,118.68, 12,581.46 and 5,580.60

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Solution

The fourth proportional to 9,118.68, 12,581.46 and 5,580.60 is: 7,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.68 : 12,581.46 = 5,580.60 : x
  2. Step 2: Convert to fraction form
    9,118.68/12,581.46 = 5,580.60/x
  3. Step 3: Cross multiply
    9,118.68x = 12,581.46 × 5,580.60
  4. Step 4: Simplify right side
    9,118.68x = 70,212,095.68
  5. Step 5: Solve for x
    x = 70,212,095.68/9,118.68
  6. Step 6: Final answer
    x = 7,699.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.