Home / 2,890.72-4,331.70-1,913.32

Finding the Fourth Proportional to 2,890.72, 4,331.70 and 1,913.32

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Solution

The fourth proportional to 2,890.72, 4,331.70 and 1,913.32 is: 2,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.72 : 4,331.70 = 1,913.32 : x
  2. Step 2: Convert to fraction form
    2,890.72/4,331.70 = 1,913.32/x
  3. Step 3: Cross multiply
    2,890.72x = 4,331.70 × 1,913.32
  4. Step 4: Simplify right side
    2,890.72x = 8,287,928.24
  5. Step 5: Solve for x
    x = 8,287,928.24/2,890.72
  6. Step 6: Final answer
    x = 2,867.08

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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.