Home / 4,720.96-7,081.42-1,258.21

Finding the Fourth Proportional to 4,720.96, 7,081.42 and 1,258.21

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Solution

The fourth proportional to 4,720.96, 7,081.42 and 1,258.21 is: 1,887.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.96 : 7,081.42 = 1,258.21 : x
  2. Step 2: Convert to fraction form
    4,720.96/7,081.42 = 1,258.21/x
  3. Step 3: Cross multiply
    4,720.96x = 7,081.42 × 1,258.21
  4. Step 4: Simplify right side
    4,720.96x = 8,909,913.46
  5. Step 5: Solve for x
    x = 8,909,913.46/4,720.96
  6. Step 6: Final answer
    x = 1,887.31

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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.