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Finding the Fourth Proportional to 7,109.53, 10,663.08 and 1,914.19

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Solution

The fourth proportional to 7,109.53, 10,663.08 and 1,914.19 is: 2,870.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.53 : 10,663.08 = 1,914.19 : x
  2. Step 2: Convert to fraction form
    7,109.53/10,663.08 = 1,914.19/x
  3. Step 3: Cross multiply
    7,109.53x = 10,663.08 × 1,914.19
  4. Step 4: Simplify right side
    7,109.53x = 20,411,127.27
  5. Step 5: Solve for x
    x = 20,411,127.27/7,109.53
  6. Step 6: Final answer
    x = 2,870.95

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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.