Home / 2,142.10-3,213.15-602.90

Finding the Fourth Proportional to 2,142.10, 3,213.15 and 602.90

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Solution

The fourth proportional to 2,142.10, 3,213.15 and 602.90 is: 904.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.10 : 3,213.15 = 602.90 : x
  2. Step 2: Convert to fraction form
    2,142.10/3,213.15 = 602.90/x
  3. Step 3: Cross multiply
    2,142.10x = 3,213.15 × 602.90
  4. Step 4: Simplify right side
    2,142.10x = 1,937,208.14
  5. Step 5: Solve for x
    x = 1,937,208.14/2,142.10
  6. Step 6: Final answer
    x = 904.35

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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.