Home / 1,970.15-2,718.45-1,262.61

Finding the Fourth Proportional to 1,970.15, 2,718.45 and 1,262.61

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Solution

The fourth proportional to 1,970.15, 2,718.45 and 1,262.61 is: 1,742.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.15 : 2,718.45 = 1,262.61 : x
  2. Step 2: Convert to fraction form
    1,970.15/2,718.45 = 1,262.61/x
  3. Step 3: Cross multiply
    1,970.15x = 2,718.45 × 1,262.61
  4. Step 4: Simplify right side
    1,970.15x = 3,432,342.15
  5. Step 5: Solve for x
    x = 3,432,342.15/1,970.15
  6. Step 6: Final answer
    x = 1,742.18

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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.