Home / 7,828.83-10,805.67-5,315.13

Finding the Fourth Proportional to 7,828.83, 10,805.67 and 5,315.13

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Solution

The fourth proportional to 7,828.83, 10,805.67 and 5,315.13 is: 7,336.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.83 : 10,805.67 = 5,315.13 : x
  2. Step 2: Convert to fraction form
    7,828.83/10,805.67 = 5,315.13/x
  3. Step 3: Cross multiply
    7,828.83x = 10,805.67 × 5,315.13
  4. Step 4: Simplify right side
    7,828.83x = 57,433,540.79
  5. Step 5: Solve for x
    x = 57,433,540.79/7,828.83
  6. Step 6: Final answer
    x = 7,336.16

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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.