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Finding the Fourth Proportional to 7,905, 10,908.72 and 4,368.24

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Solution

The fourth proportional to 7,905, 10,908.72 and 4,368.24 is: 6,028.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905 : 10,908.72 = 4,368.24 : x
  2. Step 2: Convert to fraction form
    7,905/10,908.72 = 4,368.24/x
  3. Step 3: Cross multiply
    7,905x = 10,908.72 × 4,368.24
  4. Step 4: Simplify right side
    7,905x = 47,651,907.05
  5. Step 5: Solve for x
    x = 47,651,907.05/7,905
  6. Step 6: Final answer
    x = 6,028.07

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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.