Home / 7,779.38-10,735.54-4,985.06

Finding the Fourth Proportional to 7,779.38, 10,735.54 and 4,985.06

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Solution

The fourth proportional to 7,779.38, 10,735.54 and 4,985.06 is: 6,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.38 : 10,735.54 = 4,985.06 : x
  2. Step 2: Convert to fraction form
    7,779.38/10,735.54 = 4,985.06/x
  3. Step 3: Cross multiply
    7,779.38x = 10,735.54 × 4,985.06
  4. Step 4: Simplify right side
    7,779.38x = 53,517,244.89
  5. Step 5: Solve for x
    x = 53,517,244.89/7,779.38
  6. Step 6: Final answer
    x = 6,879.38

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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.