Home / 9,117.24-12,581.37-5,580.78

Finding the Fourth Proportional to 9,117.24, 12,581.37 and 5,580.78

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Solution

The fourth proportional to 9,117.24, 12,581.37 and 5,580.78 is: 7,701.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.24 : 12,581.37 = 5,580.78 : x
  2. Step 2: Convert to fraction form
    9,117.24/12,581.37 = 5,580.78/x
  3. Step 3: Cross multiply
    9,117.24x = 12,581.37 × 5,580.78
  4. Step 4: Simplify right side
    9,117.24x = 70,213,858.07
  5. Step 5: Solve for x
    x = 70,213,858.07/9,117.24
  6. Step 6: Final answer
    x = 7,701.22

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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.