Home / 5,137.48-7,089.74-2,779.64

Finding the Fourth Proportional to 5,137.48, 7,089.74 and 2,779.64

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Solution

The fourth proportional to 5,137.48, 7,089.74 and 2,779.64 is: 3,835.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.48 : 7,089.74 = 2,779.64 : x
  2. Step 2: Convert to fraction form
    5,137.48/7,089.74 = 2,779.64/x
  3. Step 3: Cross multiply
    5,137.48x = 7,089.74 × 2,779.64
  4. Step 4: Simplify right side
    5,137.48x = 19,706,924.89
  5. Step 5: Solve for x
    x = 19,706,924.89/5,137.48
  6. Step 6: Final answer
    x = 3,835.91

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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.