Home / 3,156.30-4,730.81-1,491.48

Finding the Fourth Proportional to 3,156.30, 4,730.81 and 1,491.48

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Solution

The fourth proportional to 3,156.30, 4,730.81 and 1,491.48 is: 2,235.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.30 : 4,730.81 = 1,491.48 : x
  2. Step 2: Convert to fraction form
    3,156.30/4,730.81 = 1,491.48/x
  3. Step 3: Cross multiply
    3,156.30x = 4,730.81 × 1,491.48
  4. Step 4: Simplify right side
    3,156.30x = 7,055,901.04
  5. Step 5: Solve for x
    x = 7,055,901.04/3,156.30
  6. Step 6: Final answer
    x = 2,235.50

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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.