Home / 5,215.79-7,823.69-1,267.05

Finding the Fourth Proportional to 5,215.79, 7,823.69 and 1,267.05

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Solution

The fourth proportional to 5,215.79, 7,823.69 and 1,267.05 is: 1,900.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.79 : 7,823.69 = 1,267.05 : x
  2. Step 2: Convert to fraction form
    5,215.79/7,823.69 = 1,267.05/x
  3. Step 3: Cross multiply
    5,215.79x = 7,823.69 × 1,267.05
  4. Step 4: Simplify right side
    5,215.79x = 9,913,006.41
  5. Step 5: Solve for x
    x = 9,913,006.41/5,215.79
  6. Step 6: Final answer
    x = 1,900.58

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Similar ratio
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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.