Home / 5,669.81-7,821.81-3,779.55

Finding the Fourth Proportional to 5,669.81, 7,821.81 and 3,779.55

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Solution

The fourth proportional to 5,669.81, 7,821.81 and 3,779.55 is: 5,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,669.81 : 7,821.81 = 3,779.55 : x
  2. Step 2: Convert to fraction form
    5,669.81/7,821.81 = 3,779.55/x
  3. Step 3: Cross multiply
    5,669.81x = 7,821.81 × 3,779.55
  4. Step 4: Simplify right side
    5,669.81x = 29,562,921.99
  5. Step 5: Solve for x
    x = 29,562,921.99/5,669.81
  6. Step 6: Final answer
    x = 5,214.10

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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.