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Finding the Fourth Proportional to 7,887.26, 10,862.27 and 7,715.03

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Solution

The fourth proportional to 7,887.26, 10,862.27 and 7,715.03 is: 10,625.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.26 : 10,862.27 = 7,715.03 : x
  2. Step 2: Convert to fraction form
    7,887.26/10,862.27 = 7,715.03/x
  3. Step 3: Cross multiply
    7,887.26x = 10,862.27 × 7,715.03
  4. Step 4: Simplify right side
    7,887.26x = 83,802,766.07
  5. Step 5: Solve for x
    x = 83,802,766.07/7,887.26
  6. Step 6: Final answer
    x = 10,625.08

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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.