Home / 2,988.78-4,477.76-1,670.96

Finding the Fourth Proportional to 2,988.78, 4,477.76 and 1,670.96

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Solution

The fourth proportional to 2,988.78, 4,477.76 and 1,670.96 is: 2,503.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.78 : 4,477.76 = 1,670.96 : x
  2. Step 2: Convert to fraction form
    2,988.78/4,477.76 = 1,670.96/x
  3. Step 3: Cross multiply
    2,988.78x = 4,477.76 × 1,670.96
  4. Step 4: Simplify right side
    2,988.78x = 7,482,139.64
  5. Step 5: Solve for x
    x = 7,482,139.64/2,988.78
  6. Step 6: Final answer
    x = 2,503.41

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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.