Home / 10,455.83-15,683.75-3,880.71

Finding the Fourth Proportional to 10,455.83, 15,683.75 and 3,880.71

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Solution

The fourth proportional to 10,455.83, 15,683.75 and 3,880.71 is: 5,821.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.83 : 15,683.75 = 3,880.71 : x
  2. Step 2: Convert to fraction form
    10,455.83/15,683.75 = 3,880.71/x
  3. Step 3: Cross multiply
    10,455.83x = 15,683.75 × 3,880.71
  4. Step 4: Simplify right side
    10,455.83x = 60,864,091.53
  5. Step 5: Solve for x
    x = 60,864,091.53/10,455.83
  6. Step 6: Final answer
    x = 5,821.07

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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.