Home / 1,948.70-2,689.53-1,163.18

Finding the Fourth Proportional to 1,948.70, 2,689.53 and 1,163.18

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Solution

The fourth proportional to 1,948.70, 2,689.53 and 1,163.18 is: 1,605.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.70 : 2,689.53 = 1,163.18 : x
  2. Step 2: Convert to fraction form
    1,948.70/2,689.53 = 1,163.18/x
  3. Step 3: Cross multiply
    1,948.70x = 2,689.53 × 1,163.18
  4. Step 4: Simplify right side
    1,948.70x = 3,128,407.51
  5. Step 5: Solve for x
    x = 3,128,407.51/1,948.70
  6. Step 6: Final answer
    x = 1,605.38

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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.