Home / 4,720.90-7,079.18-2,122.16

Finding the Fourth Proportional to 4,720.90, 7,079.18 and 2,122.16

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Solution

The fourth proportional to 4,720.90, 7,079.18 and 2,122.16 is: 3,182.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.90 : 7,079.18 = 2,122.16 : x
  2. Step 2: Convert to fraction form
    4,720.90/7,079.18 = 2,122.16/x
  3. Step 3: Cross multiply
    4,720.90x = 7,079.18 × 2,122.16
  4. Step 4: Simplify right side
    4,720.90x = 15,023,152.63
  5. Step 5: Solve for x
    x = 15,023,152.63/4,720.90
  6. Step 6: Final answer
    x = 3,182.26

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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.