Home / 3,120.04-4,680.06-2,143.18

Finding the Fourth Proportional to 3,120.04, 4,680.06 and 2,143.18

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Solution

The fourth proportional to 3,120.04, 4,680.06 and 2,143.18 is: 3,214.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.04 : 4,680.06 = 2,143.18 : x
  2. Step 2: Convert to fraction form
    3,120.04/4,680.06 = 2,143.18/x
  3. Step 3: Cross multiply
    3,120.04x = 4,680.06 × 2,143.18
  4. Step 4: Simplify right side
    3,120.04x = 10,030,210.99
  5. Step 5: Solve for x
    x = 10,030,210.99/3,120.04
  6. Step 6: Final answer
    x = 3,214.77

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Half scale
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Double scale
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Similar ratio
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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.