Home / 2,913.57-4,020.81-1,587.36

Finding the Fourth Proportional to 2,913.57, 4,020.81 and 1,587.36

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Solution

The fourth proportional to 2,913.57, 4,020.81 and 1,587.36 is: 2,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.57 : 4,020.81 = 1,587.36 : x
  2. Step 2: Convert to fraction form
    2,913.57/4,020.81 = 1,587.36/x
  3. Step 3: Cross multiply
    2,913.57x = 4,020.81 × 1,587.36
  4. Step 4: Simplify right side
    2,913.57x = 6,382,465.02
  5. Step 5: Solve for x
    x = 6,382,465.02/2,913.57
  6. Step 6: Final answer
    x = 2,190.60

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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.