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Finding the Fourth Proportional to 7,772.08, 10,799.96 and 7,692.16

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Solution

The fourth proportional to 7,772.08, 10,799.96 and 7,692.16 is: 10,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.08 : 10,799.96 = 7,692.16 : x
  2. Step 2: Convert to fraction form
    7,772.08/10,799.96 = 7,692.16/x
  3. Step 3: Cross multiply
    7,772.08x = 10,799.96 × 7,692.16
  4. Step 4: Simplify right side
    7,772.08x = 83,075,020.31
  5. Step 5: Solve for x
    x = 83,075,020.31/7,772.08
  6. Step 6: Final answer
    x = 10,688.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.