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Finding the Fourth Proportional to 7,843.16, 10,828.53 and 4,860.74

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Solution

The fourth proportional to 7,843.16, 10,828.53 and 4,860.74 is: 6,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,843.16 : 10,828.53 = 4,860.74 : x
  2. Step 2: Convert to fraction form
    7,843.16/10,828.53 = 4,860.74/x
  3. Step 3: Cross multiply
    7,843.16x = 10,828.53 × 4,860.74
  4. Step 4: Simplify right side
    7,843.16x = 52,634,668.91
  5. Step 5: Solve for x
    x = 52,634,668.91/7,843.16
  6. Step 6: Final answer
    x = 6,710.90

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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.