Home / 2,938.78-4,055.61-1,612.45

Finding the Fourth Proportional to 2,938.78, 4,055.61 and 1,612.45

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Solution

The fourth proportional to 2,938.78, 4,055.61 and 1,612.45 is: 2,225.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.78 : 4,055.61 = 1,612.45 : x
  2. Step 2: Convert to fraction form
    2,938.78/4,055.61 = 1,612.45/x
  3. Step 3: Cross multiply
    2,938.78x = 4,055.61 × 1,612.45
  4. Step 4: Simplify right side
    2,938.78x = 6,539,468.34
  5. Step 5: Solve for x
    x = 6,539,468.34/2,938.78
  6. Step 6: Final answer
    x = 2,225.23

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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.