Home / 3,141.13-4,720.80-3,122.90

Finding the Fourth Proportional to 3,141.13, 4,720.80 and 3,122.90

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Solution

The fourth proportional to 3,141.13, 4,720.80 and 3,122.90 is: 4,693.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.13 : 4,720.80 = 3,122.90 : x
  2. Step 2: Convert to fraction form
    3,141.13/4,720.80 = 3,122.90/x
  3. Step 3: Cross multiply
    3,141.13x = 4,720.80 × 3,122.90
  4. Step 4: Simplify right side
    3,141.13x = 14,742,586.32
  5. Step 5: Solve for x
    x = 14,742,586.32/3,141.13
  6. Step 6: Final answer
    x = 4,693.40

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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.