Home / 4,678.47-7,017.71-1,391.59

Finding the Fourth Proportional to 4,678.47, 7,017.71 and 1,391.59

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Solution

The fourth proportional to 4,678.47, 7,017.71 and 1,391.59 is: 2,087.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.47 : 7,017.71 = 1,391.59 : x
  2. Step 2: Convert to fraction form
    4,678.47/7,017.71 = 1,391.59/x
  3. Step 3: Cross multiply
    4,678.47x = 7,017.71 × 1,391.59
  4. Step 4: Simplify right side
    4,678.47x = 9,765,775.06
  5. Step 5: Solve for x
    x = 9,765,775.06/4,678.47
  6. Step 6: Final answer
    x = 2,087.39

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1.5x scale

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.