Home / 2,913.55-4,020.58-1,587.22

Finding the Fourth Proportional to 2,913.55, 4,020.58 and 1,587.22

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Solution

The fourth proportional to 2,913.55, 4,020.58 and 1,587.22 is: 2,190.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.55 : 4,020.58 = 1,587.22 : x
  2. Step 2: Convert to fraction form
    2,913.55/4,020.58 = 1,587.22/x
  3. Step 3: Cross multiply
    2,913.55x = 4,020.58 × 1,587.22
  4. Step 4: Simplify right side
    2,913.55x = 6,381,536.92
  5. Step 5: Solve for x
    x = 6,381,536.92/2,913.55
  6. Step 6: Final answer
    x = 2,190.30

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1.5x scale

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.