Home / 2,690.15-4,034-1,392.53

Finding the Fourth Proportional to 2,690.15, 4,034 and 1,392.53

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Solution

The fourth proportional to 2,690.15, 4,034 and 1,392.53 is: 2,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.15 : 4,034 = 1,392.53 : x
  2. Step 2: Convert to fraction form
    2,690.15/4,034 = 1,392.53/x
  3. Step 3: Cross multiply
    2,690.15x = 4,034 × 1,392.53
  4. Step 4: Simplify right side
    2,690.15x = 5,617,466.02
  5. Step 5: Solve for x
    x = 5,617,466.02/2,690.15
  6. Step 6: Final answer
    x = 2,088.16

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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.