Home / 7,518.84-11,278.26-1,971.72

Finding the Fourth Proportional to 7,518.84, 11,278.26 and 1,971.72

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Solution

The fourth proportional to 7,518.84, 11,278.26 and 1,971.72 is: 2,957.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.84 : 11,278.26 = 1,971.72 : x
  2. Step 2: Convert to fraction form
    7,518.84/11,278.26 = 1,971.72/x
  3. Step 3: Cross multiply
    7,518.84x = 11,278.26 × 1,971.72
  4. Step 4: Simplify right side
    7,518.84x = 22,237,570.81
  5. Step 5: Solve for x
    x = 22,237,570.81/7,518.84
  6. Step 6: Final answer
    x = 2,957.58

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Double scale
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Similar ratio
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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.