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Finding the Fourth Proportional to 7,887.22, 10,862.22 and 7,715.00

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Solution

The fourth proportional to 7,887.22, 10,862.22 and 7,715.00 is: 10,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.22 : 10,862.22 = 7,715.00 : x
  2. Step 2: Convert to fraction form
    7,887.22/10,862.22 = 7,715.00/x
  3. Step 3: Cross multiply
    7,887.22x = 10,862.22 × 7,715.00
  4. Step 4: Simplify right side
    7,887.22x = 83,801,953.70
  5. Step 5: Solve for x
    x = 83,801,953.70/7,887.22
  6. Step 6: Final answer
    x = 10,625.03

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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.