Home / 1,312.22-1,970.40-1,246.43

Finding the Fourth Proportional to 1,312.22, 1,970.40 and 1,246.43

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Solution

The fourth proportional to 1,312.22, 1,970.40 and 1,246.43 is: 1,871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.22 : 1,970.40 = 1,246.43 : x
  2. Step 2: Convert to fraction form
    1,312.22/1,970.40 = 1,246.43/x
  3. Step 3: Cross multiply
    1,312.22x = 1,970.40 × 1,246.43
  4. Step 4: Simplify right side
    1,312.22x = 2,455,965.67
  5. Step 5: Solve for x
    x = 2,455,965.67/1,312.22
  6. Step 6: Final answer
    x = 1,871.61

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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.