Home / 7,511.80-11,267.70-5,315.80

Finding the Fourth Proportional to 7,511.80, 11,267.70 and 5,315.80

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Solution

The fourth proportional to 7,511.80, 11,267.70 and 5,315.80 is: 7,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,511.80 : 11,267.70 = 5,315.80 : x
  2. Step 2: Convert to fraction form
    7,511.80/11,267.70 = 5,315.80/x
  3. Step 3: Cross multiply
    7,511.80x = 11,267.70 × 5,315.80
  4. Step 4: Simplify right side
    7,511.80x = 59,896,839.66
  5. Step 5: Solve for x
    x = 59,896,839.66/7,511.80
  6. Step 6: Final answer
    x = 7,973.70

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1.5x scale

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.