Home / 7,890.52-10,885.62-5,239.36

Finding the Fourth Proportional to 7,890.52, 10,885.62 and 5,239.36

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Solution

The fourth proportional to 7,890.52, 10,885.62 and 5,239.36 is: 7,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.52 : 10,885.62 = 5,239.36 : x
  2. Step 2: Convert to fraction form
    7,890.52/10,885.62 = 5,239.36/x
  3. Step 3: Cross multiply
    7,890.52x = 10,885.62 × 5,239.36
  4. Step 4: Simplify right side
    7,890.52x = 57,033,682.00
  5. Step 5: Solve for x
    x = 57,033,682.00/7,890.52
  6. Step 6: Final answer
    x = 7,228.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.