Home / 7,875.36-11,815.77-3,495.89

Finding the Fourth Proportional to 7,875.36, 11,815.77 and 3,495.89

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Solution

The fourth proportional to 7,875.36, 11,815.77 and 3,495.89 is: 5,245.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.36 : 11,815.77 = 3,495.89 : x
  2. Step 2: Convert to fraction form
    7,875.36/11,815.77 = 3,495.89/x
  3. Step 3: Cross multiply
    7,875.36x = 11,815.77 × 3,495.89
  4. Step 4: Simplify right side
    7,875.36x = 41,306,632.19
  5. Step 5: Solve for x
    x = 41,306,632.19/7,875.36
  6. Step 6: Final answer
    x = 5,245.05

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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.