Home / 7,784.88-10,743.13-4,990.38

Finding the Fourth Proportional to 7,784.88, 10,743.13 and 4,990.38

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Solution

The fourth proportional to 7,784.88, 10,743.13 and 4,990.38 is: 6,886.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.88 : 10,743.13 = 4,990.38 : x
  2. Step 2: Convert to fraction form
    7,784.88/10,743.13 = 4,990.38/x
  3. Step 3: Cross multiply
    7,784.88x = 10,743.13 × 4,990.38
  4. Step 4: Simplify right side
    7,784.88x = 53,612,247.37
  5. Step 5: Solve for x
    x = 53,612,247.37/7,784.88
  6. Step 6: Final answer
    x = 6,886.72

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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.