Home / 2,746.40-4,119.60-2,631.20

Finding the Fourth Proportional to 2,746.40, 4,119.60 and 2,631.20

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Solution

The fourth proportional to 2,746.40, 4,119.60 and 2,631.20 is: 3,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,746.40 : 4,119.60 = 2,631.20 : x
  2. Step 2: Convert to fraction form
    2,746.40/4,119.60 = 2,631.20/x
  3. Step 3: Cross multiply
    2,746.40x = 4,119.60 × 2,631.20
  4. Step 4: Simplify right side
    2,746.40x = 10,839,491.52
  5. Step 5: Solve for x
    x = 10,839,491.52/2,746.40
  6. Step 6: Final answer
    x = 3,946.80

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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.