Home / 7,140.30-10,710.45-1,946.18

Finding the Fourth Proportional to 7,140.30, 10,710.45 and 1,946.18

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Solution

The fourth proportional to 7,140.30, 10,710.45 and 1,946.18 is: 2,919.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.30 : 10,710.45 = 1,946.18 : x
  2. Step 2: Convert to fraction form
    7,140.30/10,710.45 = 1,946.18/x
  3. Step 3: Cross multiply
    7,140.30x = 10,710.45 × 1,946.18
  4. Step 4: Simplify right side
    7,140.30x = 20,844,410.03
  5. Step 5: Solve for x
    x = 20,844,410.03/7,140.30
  6. Step 6: Final answer
    x = 2,919.26

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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.