Home / 9,210.87-12,707.43-5,231.46

Finding the Fourth Proportional to 9,210.87, 12,707.43 and 5,231.46

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Solution

The fourth proportional to 9,210.87, 12,707.43 and 5,231.46 is: 7,217.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.87 : 12,707.43 = 5,231.46 : x
  2. Step 2: Convert to fraction form
    9,210.87/12,707.43 = 5,231.46/x
  3. Step 3: Cross multiply
    9,210.87x = 12,707.43 × 5,231.46
  4. Step 4: Simplify right side
    9,210.87x = 66,478,411.75
  5. Step 5: Solve for x
    x = 66,478,411.75/9,210.87
  6. Step 6: Final answer
    x = 7,217.39

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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.