Home / 2,690.31-3,712.43-1,511.16

Finding the Fourth Proportional to 2,690.31, 3,712.43 and 1,511.16

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Solution

The fourth proportional to 2,690.31, 3,712.43 and 1,511.16 is: 2,085.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.31 : 3,712.43 = 1,511.16 : x
  2. Step 2: Convert to fraction form
    2,690.31/3,712.43 = 1,511.16/x
  3. Step 3: Cross multiply
    2,690.31x = 3,712.43 × 1,511.16
  4. Step 4: Simplify right side
    2,690.31x = 5,610,065.58
  5. Step 5: Solve for x
    x = 5,610,065.58/2,690.31
  6. Step 6: Final answer
    x = 2,085.28

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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.