Home / 2,938.60-4,055.98-1,760.36

Finding the Fourth Proportional to 2,938.60, 4,055.98 and 1,760.36

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Solution

The fourth proportional to 2,938.60, 4,055.98 and 1,760.36 is: 2,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.60 : 4,055.98 = 1,760.36 : x
  2. Step 2: Convert to fraction form
    2,938.60/4,055.98 = 1,760.36/x
  3. Step 3: Cross multiply
    2,938.60x = 4,055.98 × 1,760.36
  4. Step 4: Simplify right side
    2,938.60x = 7,139,984.95
  5. Step 5: Solve for x
    x = 7,139,984.95/2,938.60
  6. Step 6: Final answer
    x = 2,429.72

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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.