Home / 1,411.44-1,949.68-1,312.88

Finding the Fourth Proportional to 1,411.44, 1,949.68 and 1,312.88

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Solution

The fourth proportional to 1,411.44, 1,949.68 and 1,312.88 is: 1,813.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.44 : 1,949.68 = 1,312.88 : x
  2. Step 2: Convert to fraction form
    1,411.44/1,949.68 = 1,312.88/x
  3. Step 3: Cross multiply
    1,411.44x = 1,949.68 × 1,312.88
  4. Step 4: Simplify right side
    1,411.44x = 2,559,695.88
  5. Step 5: Solve for x
    x = 2,559,695.88/1,411.44
  6. Step 6: Final answer
    x = 1,813.54

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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.