Home / 1,971.19-2,718.95-1,214.58

Finding the Fourth Proportional to 1,971.19, 2,718.95 and 1,214.58

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Solution

The fourth proportional to 1,971.19, 2,718.95 and 1,214.58 is: 1,675.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.19 : 2,718.95 = 1,214.58 : x
  2. Step 2: Convert to fraction form
    1,971.19/2,718.95 = 1,214.58/x
  3. Step 3: Cross multiply
    1,971.19x = 2,718.95 × 1,214.58
  4. Step 4: Simplify right side
    1,971.19x = 3,302,382.29
  5. Step 5: Solve for x
    x = 3,302,382.29/1,971.19
  6. Step 6: Final answer
    x = 1,675.32

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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.