Home / 2,975.86-4,104.90-1,913.28

Finding the Fourth Proportional to 2,975.86, 4,104.90 and 1,913.28

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Solution

The fourth proportional to 2,975.86, 4,104.90 and 1,913.28 is: 2,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.86 : 4,104.90 = 1,913.28 : x
  2. Step 2: Convert to fraction form
    2,975.86/4,104.90 = 1,913.28/x
  3. Step 3: Cross multiply
    2,975.86x = 4,104.90 × 1,913.28
  4. Step 4: Simplify right side
    2,975.86x = 7,853,823.07
  5. Step 5: Solve for x
    x = 7,853,823.07/2,975.86
  6. Step 6: Final answer
    x = 2,639.18

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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.