Home / 7,530.90-11,300.40-3,148.80

Finding the Fourth Proportional to 7,530.90, 11,300.40 and 3,148.80

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Solution

The fourth proportional to 7,530.90, 11,300.40 and 3,148.80 is: 4,724.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,530.90 : 11,300.40 = 3,148.80 : x
  2. Step 2: Convert to fraction form
    7,530.90/11,300.40 = 3,148.80/x
  3. Step 3: Cross multiply
    7,530.90x = 11,300.40 × 3,148.80
  4. Step 4: Simplify right side
    7,530.90x = 35,582,699.52
  5. Step 5: Solve for x
    x = 35,582,699.52/7,530.90
  6. Step 6: Final answer
    x = 4,724.89

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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.