Home / 2,509.65-3,463.56-1,390.95

Finding the Fourth Proportional to 2,509.65, 3,463.56 and 1,390.95

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Solution

The fourth proportional to 2,509.65, 3,463.56 and 1,390.95 is: 1,919.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.65 : 3,463.56 = 1,390.95 : x
  2. Step 2: Convert to fraction form
    2,509.65/3,463.56 = 1,390.95/x
  3. Step 3: Cross multiply
    2,509.65x = 3,463.56 × 1,390.95
  4. Step 4: Simplify right side
    2,509.65x = 4,817,638.78
  5. Step 5: Solve for x
    x = 4,817,638.78/2,509.65
  6. Step 6: Final answer
    x = 1,919.65

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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.