Home / 8,280.74-11,428.70-5,303.69

Finding the Fourth Proportional to 8,280.74, 11,428.70 and 5,303.69

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Solution

The fourth proportional to 8,280.74, 11,428.70 and 5,303.69 is: 7,319.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.74 : 11,428.70 = 5,303.69 : x
  2. Step 2: Convert to fraction form
    8,280.74/11,428.70 = 5,303.69/x
  3. Step 3: Cross multiply
    8,280.74x = 11,428.70 × 5,303.69
  4. Step 4: Simplify right side
    8,280.74x = 60,614,198.24
  5. Step 5: Solve for x
    x = 60,614,198.24/8,280.74
  6. Step 6: Final answer
    x = 7,319.91

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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.