Home / 4,989.83-7,484.77-1,291.80

Finding the Fourth Proportional to 4,989.83, 7,484.77 and 1,291.80

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Solution

The fourth proportional to 4,989.83, 7,484.77 and 1,291.80 is: 1,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.83 : 7,484.77 = 1,291.80 : x
  2. Step 2: Convert to fraction form
    4,989.83/7,484.77 = 1,291.80/x
  3. Step 3: Cross multiply
    4,989.83x = 7,484.77 × 1,291.80
  4. Step 4: Simplify right side
    4,989.83x = 9,668,825.89
  5. Step 5: Solve for x
    x = 9,668,825.89/4,989.83
  6. Step 6: Final answer
    x = 1,937.71

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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.