Home / 7,112.68-9,812.74-4,319.08

Finding the Fourth Proportional to 7,112.68, 9,812.74 and 4,319.08

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Solution

The fourth proportional to 7,112.68, 9,812.74 and 4,319.08 is: 5,958.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.68 : 9,812.74 = 4,319.08 : x
  2. Step 2: Convert to fraction form
    7,112.68/9,812.74 = 4,319.08/x
  3. Step 3: Cross multiply
    7,112.68x = 9,812.74 × 4,319.08
  4. Step 4: Simplify right side
    7,112.68x = 42,382,009.08
  5. Step 5: Solve for x
    x = 42,382,009.08/7,112.68
  6. Step 6: Final answer
    x = 5,958.66

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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.