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Finding the Fourth Proportional to 8,907.16, 12,290.88 and 4,927.72

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Solution

The fourth proportional to 8,907.16, 12,290.88 and 4,927.72 is: 6,799.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.16 : 12,290.88 = 4,927.72 : x
  2. Step 2: Convert to fraction form
    8,907.16/12,290.88 = 4,927.72/x
  3. Step 3: Cross multiply
    8,907.16x = 12,290.88 × 4,927.72
  4. Step 4: Simplify right side
    8,907.16x = 60,566,015.19
  5. Step 5: Solve for x
    x = 60,566,015.19/8,907.16
  6. Step 6: Final answer
    x = 6,799.70

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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.