Home / 2,389.14-3,580.47-1,235.70

Finding the Fourth Proportional to 2,389.14, 3,580.47 and 1,235.70

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Solution

The fourth proportional to 2,389.14, 3,580.47 and 1,235.70 is: 1,851.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.14 : 3,580.47 = 1,235.70 : x
  2. Step 2: Convert to fraction form
    2,389.14/3,580.47 = 1,235.70/x
  3. Step 3: Cross multiply
    2,389.14x = 3,580.47 × 1,235.70
  4. Step 4: Simplify right side
    2,389.14x = 4,424,386.78
  5. Step 5: Solve for x
    x = 4,424,386.78/2,389.14
  6. Step 6: Final answer
    x = 1,851.87

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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.