Home / 2,913.55-4,020.06-1,905.49

Finding the Fourth Proportional to 2,913.55, 4,020.06 and 1,905.49

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Solution

The fourth proportional to 2,913.55, 4,020.06 and 1,905.49 is: 2,629.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.55 : 4,020.06 = 1,905.49 : x
  2. Step 2: Convert to fraction form
    2,913.55/4,020.06 = 1,905.49/x
  3. Step 3: Cross multiply
    2,913.55x = 4,020.06 × 1,905.49
  4. Step 4: Simplify right side
    2,913.55x = 7,660,184.13
  5. Step 5: Solve for x
    x = 7,660,184.13/2,913.55
  6. Step 6: Final answer
    x = 2,629.16

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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.