Home / 3,860.90-5,790.81-1,263.50

Finding the Fourth Proportional to 3,860.90, 5,790.81 and 1,263.50

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Solution

The fourth proportional to 3,860.90, 5,790.81 and 1,263.50 is: 1,895.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.90 : 5,790.81 = 1,263.50 : x
  2. Step 2: Convert to fraction form
    3,860.90/5,790.81 = 1,263.50/x
  3. Step 3: Cross multiply
    3,860.90x = 5,790.81 × 1,263.50
  4. Step 4: Simplify right side
    3,860.90x = 7,316,688.44
  5. Step 5: Solve for x
    x = 7,316,688.44/3,860.90
  6. Step 6: Final answer
    x = 1,895.07

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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.