Home / 9,239.41-12,750.38-4,990.47

Finding the Fourth Proportional to 9,239.41, 12,750.38 and 4,990.47

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Solution

The fourth proportional to 9,239.41, 12,750.38 and 4,990.47 is: 6,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,239.41 : 12,750.38 = 4,990.47 : x
  2. Step 2: Convert to fraction form
    9,239.41/12,750.38 = 4,990.47/x
  3. Step 3: Cross multiply
    9,239.41x = 12,750.38 × 4,990.47
  4. Step 4: Simplify right side
    9,239.41x = 63,630,363.93
  5. Step 5: Solve for x
    x = 63,630,363.93/9,239.41
  6. Step 6: Final answer
    x = 6,886.85

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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.