Home / 3,138.12-4,710.28-2,355.40

Finding the Fourth Proportional to 3,138.12, 4,710.28 and 2,355.40

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Solution

The fourth proportional to 3,138.12, 4,710.28 and 2,355.40 is: 3,535.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.12 : 4,710.28 = 2,355.40 : x
  2. Step 2: Convert to fraction form
    3,138.12/4,710.28 = 2,355.40/x
  3. Step 3: Cross multiply
    3,138.12x = 4,710.28 × 2,355.40
  4. Step 4: Simplify right side
    3,138.12x = 11,094,593.51
  5. Step 5: Solve for x
    x = 11,094,593.51/3,138.12
  6. Step 6: Final answer
    x = 3,535.43

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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.