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Finding the Fourth Proportional to 7,350, 10,143 and 4,206.12

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Solution

The fourth proportional to 7,350, 10,143 and 4,206.12 is: 5,804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,350 : 10,143 = 4,206.12 : x
  2. Step 2: Convert to fraction form
    7,350/10,143 = 4,206.12/x
  3. Step 3: Cross multiply
    7,350x = 10,143 × 4,206.12
  4. Step 4: Simplify right side
    7,350x = 42,662,675.16
  5. Step 5: Solve for x
    x = 42,662,675.16/7,350
  6. Step 6: Final answer
    x = 5,804.45

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Double scale
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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.