Home / 7,780.47-10,728.54-5,258.21

Finding the Fourth Proportional to 7,780.47, 10,728.54 and 5,258.21

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Solution

The fourth proportional to 7,780.47, 10,728.54 and 5,258.21 is: 7,250.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.47 : 10,728.54 = 5,258.21 : x
  2. Step 2: Convert to fraction form
    7,780.47/10,728.54 = 5,258.21/x
  3. Step 3: Cross multiply
    7,780.47x = 10,728.54 × 5,258.21
  4. Step 4: Simplify right side
    7,780.47x = 56,412,836.38
  5. Step 5: Solve for x
    x = 56,412,836.38/7,780.47
  6. Step 6: Final answer
    x = 7,250.57

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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.