Home / 2,779.90-4,166.67-1,316.98

Finding the Fourth Proportional to 2,779.90, 4,166.67 and 1,316.98

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Solution

The fourth proportional to 2,779.90, 4,166.67 and 1,316.98 is: 1,973.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.90 : 4,166.67 = 1,316.98 : x
  2. Step 2: Convert to fraction form
    2,779.90/4,166.67 = 1,316.98/x
  3. Step 3: Cross multiply
    2,779.90x = 4,166.67 × 1,316.98
  4. Step 4: Simplify right side
    2,779.90x = 5,487,421.06
  5. Step 5: Solve for x
    x = 5,487,421.06/2,779.90
  6. Step 6: Final answer
    x = 1,973.96

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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.