Home / 4,779.78-7,168.86-1,317.03

Finding the Fourth Proportional to 4,779.78, 7,168.86 and 1,317.03

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Solution

The fourth proportional to 4,779.78, 7,168.86 and 1,317.03 is: 1,975.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.78 : 7,168.86 = 1,317.03 : x
  2. Step 2: Convert to fraction form
    4,779.78/7,168.86 = 1,317.03/x
  3. Step 3: Cross multiply
    4,779.78x = 7,168.86 × 1,317.03
  4. Step 4: Simplify right side
    4,779.78x = 9,441,603.69
  5. Step 5: Solve for x
    x = 9,441,603.69/4,779.78
  6. Step 6: Final answer
    x = 1,975.32

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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.