Home / 7,918.73-10,921.12-4,890.19

Finding the Fourth Proportional to 7,918.73, 10,921.12 and 4,890.19

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Solution

The fourth proportional to 7,918.73, 10,921.12 and 4,890.19 is: 6,744.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.73 : 10,921.12 = 4,890.19 : x
  2. Step 2: Convert to fraction form
    7,918.73/10,921.12 = 4,890.19/x
  3. Step 3: Cross multiply
    7,918.73x = 10,921.12 × 4,890.19
  4. Step 4: Simplify right side
    7,918.73x = 53,406,272.76
  5. Step 5: Solve for x
    x = 53,406,272.76/7,918.73
  6. Step 6: Final answer
    x = 6,744.30

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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.