Home / 2,913.96-4,021.28-1,587.68

Finding the Fourth Proportional to 2,913.96, 4,021.28 and 1,587.68

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Solution

The fourth proportional to 2,913.96, 4,021.28 and 1,587.68 is: 2,191.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.96 : 4,021.28 = 1,587.68 : x
  2. Step 2: Convert to fraction form
    2,913.96/4,021.28 = 1,587.68/x
  3. Step 3: Cross multiply
    2,913.96x = 4,021.28 × 1,587.68
  4. Step 4: Simplify right side
    2,913.96x = 6,384,477.79
  5. Step 5: Solve for x
    x = 6,384,477.79/2,913.96
  6. Step 6: Final answer
    x = 2,191.00

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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.