Home / 5,280.09-7,920.14-1,769.45

Finding the Fourth Proportional to 5,280.09, 7,920.14 and 1,769.45

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Solution

The fourth proportional to 5,280.09, 7,920.14 and 1,769.45 is: 2,654.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.09 : 7,920.14 = 1,769.45 : x
  2. Step 2: Convert to fraction form
    5,280.09/7,920.14 = 1,769.45/x
  3. Step 3: Cross multiply
    5,280.09x = 7,920.14 × 1,769.45
  4. Step 4: Simplify right side
    5,280.09x = 14,014,243.28
  5. Step 5: Solve for x
    x = 14,014,243.28/5,280.09
  6. Step 6: Final answer
    x = 2,654.17

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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.