Home / 2,130.42-3,191.48-1,203.18

Finding the Fourth Proportional to 2,130.42, 3,191.48 and 1,203.18

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Solution

The fourth proportional to 2,130.42, 3,191.48 and 1,203.18 is: 1,802.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.42 : 3,191.48 = 1,203.18 : x
  2. Step 2: Convert to fraction form
    2,130.42/3,191.48 = 1,203.18/x
  3. Step 3: Cross multiply
    2,130.42x = 3,191.48 × 1,203.18
  4. Step 4: Simplify right side
    2,130.42x = 3,839,924.91
  5. Step 5: Solve for x
    x = 3,839,924.91/2,130.42
  6. Step 6: Final answer
    x = 1,802.43

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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.