Home / 2,160.24-2,981.16-1,374.28

Finding the Fourth Proportional to 2,160.24, 2,981.16 and 1,374.28

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Solution

The fourth proportional to 2,160.24, 2,981.16 and 1,374.28 is: 1,896.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.24 : 2,981.16 = 1,374.28 : x
  2. Step 2: Convert to fraction form
    2,160.24/2,981.16 = 1,374.28/x
  3. Step 3: Cross multiply
    2,160.24x = 2,981.16 × 1,374.28
  4. Step 4: Simplify right side
    2,160.24x = 4,096,948.56
  5. Step 5: Solve for x
    x = 4,096,948.56/2,160.24
  6. Step 6: Final answer
    x = 1,896.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.