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Finding the Fourth Proportional to 7,128.66, 10,679.04 and 4,907.10

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Solution

The fourth proportional to 7,128.66, 10,679.04 and 4,907.10 is: 7,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.66 : 10,679.04 = 4,907.10 : x
  2. Step 2: Convert to fraction form
    7,128.66/10,679.04 = 4,907.10/x
  3. Step 3: Cross multiply
    7,128.66x = 10,679.04 × 4,907.10
  4. Step 4: Simplify right side
    7,128.66x = 52,403,117.18
  5. Step 5: Solve for x
    x = 52,403,117.18/7,128.66
  6. Step 6: Final answer
    x = 7,351.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.