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Finding the Fourth Proportional to 5,287.40, 7,934.74 and 5,246.39

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Solution

The fourth proportional to 5,287.40, 7,934.74 and 5,246.39 is: 7,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.40 : 7,934.74 = 5,246.39 : x
  2. Step 2: Convert to fraction form
    5,287.40/7,934.74 = 5,246.39/x
  3. Step 3: Cross multiply
    5,287.40x = 7,934.74 × 5,246.39
  4. Step 4: Simplify right side
    5,287.40x = 41,628,740.59
  5. Step 5: Solve for x
    x = 41,628,740.59/5,287.40
  6. Step 6: Final answer
    x = 7,873.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.