Home / 3,139.47-4,710.35-1,290.08

Finding the Fourth Proportional to 3,139.47, 4,710.35 and 1,290.08

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Solution

The fourth proportional to 3,139.47, 4,710.35 and 1,290.08 is: 1,935.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.47 : 4,710.35 = 1,290.08 : x
  2. Step 2: Convert to fraction form
    3,139.47/4,710.35 = 1,290.08/x
  3. Step 3: Cross multiply
    3,139.47x = 4,710.35 × 1,290.08
  4. Step 4: Simplify right side
    3,139.47x = 6,076,728.33
  5. Step 5: Solve for x
    x = 6,076,728.33/3,139.47
  6. Step 6: Final answer
    x = 1,935.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.