Home / 9,112.08-12,574.80-5,386.08

Finding the Fourth Proportional to 9,112.08, 12,574.80 and 5,386.08

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Solution

The fourth proportional to 9,112.08, 12,574.80 and 5,386.08 is: 7,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112.08 : 12,574.80 = 5,386.08 : x
  2. Step 2: Convert to fraction form
    9,112.08/12,574.80 = 5,386.08/x
  3. Step 3: Cross multiply
    9,112.08x = 12,574.80 × 5,386.08
  4. Step 4: Simplify right side
    9,112.08x = 67,728,878.78
  5. Step 5: Solve for x
    x = 67,728,878.78/9,112.08
  6. Step 6: Final answer
    x = 7,432.87

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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.