Home / 4,752.30-7,129.66-1,978.05

Finding the Fourth Proportional to 4,752.30, 7,129.66 and 1,978.05

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Solution

The fourth proportional to 4,752.30, 7,129.66 and 1,978.05 is: 2,967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.30 : 7,129.66 = 1,978.05 : x
  2. Step 2: Convert to fraction form
    4,752.30/7,129.66 = 1,978.05/x
  3. Step 3: Cross multiply
    4,752.30x = 7,129.66 × 1,978.05
  4. Step 4: Simplify right side
    4,752.30x = 14,102,795.99
  5. Step 5: Solve for x
    x = 14,102,795.99/4,752.30
  6. Step 6: Final answer
    x = 2,967.58

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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.