Home / 2,690.98-4,036.68-1,047.40

Finding the Fourth Proportional to 2,690.98, 4,036.68 and 1,047.40

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Solution

The fourth proportional to 2,690.98, 4,036.68 and 1,047.40 is: 1,571.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.98 : 4,036.68 = 1,047.40 : x
  2. Step 2: Convert to fraction form
    2,690.98/4,036.68 = 1,047.40/x
  3. Step 3: Cross multiply
    2,690.98x = 4,036.68 × 1,047.40
  4. Step 4: Simplify right side
    2,690.98x = 4,228,018.63
  5. Step 5: Solve for x
    x = 4,228,018.63/2,690.98
  6. Step 6: Final answer
    x = 1,571.18

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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.