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Finding the Fourth Proportional to 4,720.88, 7,080.87 and 1,434.00

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Solution

The fourth proportional to 4,720.88, 7,080.87 and 1,434.00 is: 2,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,720.88 : 7,080.87 = 1,434.00 : x
  2. Step 2: Convert to fraction form
    4,720.88/7,080.87 = 1,434.00/x
  3. Step 3: Cross multiply
    4,720.88x = 7,080.87 × 1,434.00
  4. Step 4: Simplify right side
    4,720.88x = 10,153,999.51
  5. Step 5: Solve for x
    x = 10,153,999.51/4,720.88
  6. Step 6: Final answer
    x = 2,150.87

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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.