Home / 2,938.40-4,055.11-1,612.16

Finding the Fourth Proportional to 2,938.40, 4,055.11 and 1,612.16

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Solution

The fourth proportional to 2,938.40, 4,055.11 and 1,612.16 is: 2,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.40 : 4,055.11 = 1,612.16 : x
  2. Step 2: Convert to fraction form
    2,938.40/4,055.11 = 1,612.16/x
  3. Step 3: Cross multiply
    2,938.40x = 4,055.11 × 1,612.16
  4. Step 4: Simplify right side
    2,938.40x = 6,537,486.14
  5. Step 5: Solve for x
    x = 6,537,486.14/2,938.40
  6. Step 6: Final answer
    x = 2,224.85

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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.