Home / 5,111.68-7,664.07-1,779.07

Finding the Fourth Proportional to 5,111.68, 7,664.07 and 1,779.07

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Solution

The fourth proportional to 5,111.68, 7,664.07 and 1,779.07 is: 2,667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.68 : 7,664.07 = 1,779.07 : x
  2. Step 2: Convert to fraction form
    5,111.68/7,664.07 = 1,779.07/x
  3. Step 3: Cross multiply
    5,111.68x = 7,664.07 × 1,779.07
  4. Step 4: Simplify right side
    5,111.68x = 13,634,917.01
  5. Step 5: Solve for x
    x = 13,634,917.01/5,111.68
  6. Step 6: Final answer
    x = 2,667.40

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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.