Home / 5,136.96-7,088.98-2,779.09

Finding the Fourth Proportional to 5,136.96, 7,088.98 and 2,779.09

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Solution

The fourth proportional to 5,136.96, 7,088.98 and 2,779.09 is: 3,835.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.96 : 7,088.98 = 2,779.09 : x
  2. Step 2: Convert to fraction form
    5,136.96/7,088.98 = 2,779.09/x
  3. Step 3: Cross multiply
    5,136.96x = 7,088.98 × 2,779.09
  4. Step 4: Simplify right side
    5,136.96x = 19,700,913.43
  5. Step 5: Solve for x
    x = 19,700,913.43/5,136.96
  6. Step 6: Final answer
    x = 3,835.13

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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.