Home / 2,690.31-4,036.74-1,130.66

Finding the Fourth Proportional to 2,690.31, 4,036.74 and 1,130.66

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Solution

The fourth proportional to 2,690.31, 4,036.74 and 1,130.66 is: 1,696.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.31 : 4,036.74 = 1,130.66 : x
  2. Step 2: Convert to fraction form
    2,690.31/4,036.74 = 1,130.66/x
  3. Step 3: Cross multiply
    2,690.31x = 4,036.74 × 1,130.66
  4. Step 4: Simplify right side
    2,690.31x = 4,564,171.16
  5. Step 5: Solve for x
    x = 4,564,171.16/2,690.31
  6. Step 6: Final answer
    x = 1,696.52

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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.