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Finding the Fourth Proportional to 7,914.40, 10,922 and 4,377.62

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Solution

The fourth proportional to 7,914.40, 10,922 and 4,377.62 is: 6,041.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914.40 : 10,922 = 4,377.62 : x
  2. Step 2: Convert to fraction form
    7,914.40/10,922 = 4,377.62/x
  3. Step 3: Cross multiply
    7,914.40x = 10,922 × 4,377.62
  4. Step 4: Simplify right side
    7,914.40x = 47,812,365.64
  5. Step 5: Solve for x
    x = 47,812,365.64/7,914.40
  6. Step 6: Final answer
    x = 6,041.19

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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.