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Finding the Fourth Proportional to 2,673.95, 3,690.16 and 1,555.13

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Solution

The fourth proportional to 2,673.95, 3,690.16 and 1,555.13 is: 2,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.95 : 3,690.16 = 1,555.13 : x
  2. Step 2: Convert to fraction form
    2,673.95/3,690.16 = 1,555.13/x
  3. Step 3: Cross multiply
    2,673.95x = 3,690.16 × 1,555.13
  4. Step 4: Simplify right side
    2,673.95x = 5,738,683.86
  5. Step 5: Solve for x
    x = 5,738,683.86/2,673.95
  6. Step 6: Final answer
    x = 2,146.15

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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.