Home / 2,890.36-4,330.10-1,427.80

Finding the Fourth Proportional to 2,890.36, 4,330.10 and 1,427.80

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Solution

The fourth proportional to 2,890.36, 4,330.10 and 1,427.80 is: 2,139.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.36 : 4,330.10 = 1,427.80 : x
  2. Step 2: Convert to fraction form
    2,890.36/4,330.10 = 1,427.80/x
  3. Step 3: Cross multiply
    2,890.36x = 4,330.10 × 1,427.80
  4. Step 4: Simplify right side
    2,890.36x = 6,182,516.78
  5. Step 5: Solve for x
    x = 6,182,516.78/2,890.36
  6. Step 6: Final answer
    x = 2,139.01

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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.