Home / 2,089.18-3,130.68-1,972.30

Finding the Fourth Proportional to 2,089.18, 3,130.68 and 1,972.30

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Solution

The fourth proportional to 2,089.18, 3,130.68 and 1,972.30 is: 2,955.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.18 : 3,130.68 = 1,972.30 : x
  2. Step 2: Convert to fraction form
    2,089.18/3,130.68 = 1,972.30/x
  3. Step 3: Cross multiply
    2,089.18x = 3,130.68 × 1,972.30
  4. Step 4: Simplify right side
    2,089.18x = 6,174,640.16
  5. Step 5: Solve for x
    x = 6,174,640.16/2,089.18
  6. Step 6: Final answer
    x = 2,955.53

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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.