Home / 2,674.19-3,690.40-1,555.16

Finding the Fourth Proportional to 2,674.19, 3,690.40 and 1,555.16

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Solution

The fourth proportional to 2,674.19, 3,690.40 and 1,555.16 is: 2,146.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.19 : 3,690.40 = 1,555.16 : x
  2. Step 2: Convert to fraction form
    2,674.19/3,690.40 = 1,555.16/x
  3. Step 3: Cross multiply
    2,674.19x = 3,690.40 × 1,555.16
  4. Step 4: Simplify right side
    2,674.19x = 5,739,140.12
  5. Step 5: Solve for x
    x = 5,739,140.12/2,674.19
  6. Step 6: Final answer
    x = 2,146.13

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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.