Home / 5,110.31-7,666.88-1,779.45

Finding the Fourth Proportional to 5,110.31, 7,666.88 and 1,779.45

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Solution

The fourth proportional to 5,110.31, 7,666.88 and 1,779.45 is: 2,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.31 : 7,666.88 = 1,779.45 : x
  2. Step 2: Convert to fraction form
    5,110.31/7,666.88 = 1,779.45/x
  3. Step 3: Cross multiply
    5,110.31x = 7,666.88 × 1,779.45
  4. Step 4: Simplify right side
    5,110.31x = 13,642,820.72
  5. Step 5: Solve for x
    x = 13,642,820.72/5,110.31
  6. Step 6: Final answer
    x = 2,669.67

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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.