Home / 7,828.20-10,802.74-4,291.36

Finding the Fourth Proportional to 7,828.20, 10,802.74 and 4,291.36

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Solution

The fourth proportional to 7,828.20, 10,802.74 and 4,291.36 is: 5,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.20 : 10,802.74 = 4,291.36 : x
  2. Step 2: Convert to fraction form
    7,828.20/10,802.74 = 4,291.36/x
  3. Step 3: Cross multiply
    7,828.20x = 10,802.74 × 4,291.36
  4. Step 4: Simplify right side
    7,828.20x = 46,358,446.33
  5. Step 5: Solve for x
    x = 46,358,446.33/7,828.20
  6. Step 6: Final answer
    x = 5,921.98

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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.