Home / 4,779.81-7,168.91-1,316.25

Finding the Fourth Proportional to 4,779.81, 7,168.91 and 1,316.25

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Solution

The fourth proportional to 4,779.81, 7,168.91 and 1,316.25 is: 1,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.81 : 7,168.91 = 1,316.25 : x
  2. Step 2: Convert to fraction form
    4,779.81/7,168.91 = 1,316.25/x
  3. Step 3: Cross multiply
    4,779.81x = 7,168.91 × 1,316.25
  4. Step 4: Simplify right side
    4,779.81x = 9,436,071.21
  5. Step 5: Solve for x
    x = 9,436,071.21/4,779.81
  6. Step 6: Final answer
    x = 1,974.15

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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.