Home / 4,720.86-7,081.32-1,258.10

Finding the Fourth Proportional to 4,720.86, 7,081.32 and 1,258.10

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Solution

The fourth proportional to 4,720.86, 7,081.32 and 1,258.10 is: 1,887.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.86 : 7,081.32 = 1,258.10 : x
  2. Step 2: Convert to fraction form
    4,720.86/7,081.32 = 1,258.10/x
  3. Step 3: Cross multiply
    4,720.86x = 7,081.32 × 1,258.10
  4. Step 4: Simplify right side
    4,720.86x = 8,909,008.69
  5. Step 5: Solve for x
    x = 8,909,008.69/4,720.86
  6. Step 6: Final answer
    x = 1,887.16

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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.