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Finding the Fourth Proportional to 7,868.29, 10,857.29 and 4,681.68

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Solution

The fourth proportional to 7,868.29, 10,857.29 and 4,681.68 is: 6,460.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.29 : 10,857.29 = 4,681.68 : x
  2. Step 2: Convert to fraction form
    7,868.29/10,857.29 = 4,681.68/x
  3. Step 3: Cross multiply
    7,868.29x = 10,857.29 × 4,681.68
  4. Step 4: Simplify right side
    7,868.29x = 50,830,334.04
  5. Step 5: Solve for x
    x = 50,830,334.04/7,868.29
  6. Step 6: Final answer
    x = 6,460.15

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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.