Home / 6,821.15-9,391.75-5,931.77

Finding the Fourth Proportional to 6,821.15, 9,391.75 and 5,931.77

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Solution

The fourth proportional to 6,821.15, 9,391.75 and 5,931.77 is: 8,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.15 : 9,391.75 = 5,931.77 : x
  2. Step 2: Convert to fraction form
    6,821.15/9,391.75 = 5,931.77/x
  3. Step 3: Cross multiply
    6,821.15x = 9,391.75 × 5,931.77
  4. Step 4: Simplify right side
    6,821.15x = 55,709,639.11
  5. Step 5: Solve for x
    x = 55,709,639.11/6,821.15
  6. Step 6: Final answer
    x = 8,167.20

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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.