Home / 3,120.85-4,688.03-1,888.84

Finding the Fourth Proportional to 3,120.85, 4,688.03 and 1,888.84

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Solution

The fourth proportional to 3,120.85, 4,688.03 and 1,888.84 is: 2,837.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.85 : 4,688.03 = 1,888.84 : x
  2. Step 2: Convert to fraction form
    3,120.85/4,688.03 = 1,888.84/x
  3. Step 3: Cross multiply
    3,120.85x = 4,688.03 × 1,888.84
  4. Step 4: Simplify right side
    3,120.85x = 8,854,938.59
  5. Step 5: Solve for x
    x = 8,854,938.59/3,120.85
  6. Step 6: Final answer
    x = 2,837.35

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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.