Home / 7,779.40-10,735.62-4,242.68

Finding the Fourth Proportional to 7,779.40, 10,735.62 and 4,242.68

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Solution

The fourth proportional to 7,779.40, 10,735.62 and 4,242.68 is: 5,854.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.40 : 10,735.62 = 4,242.68 : x
  2. Step 2: Convert to fraction form
    7,779.40/10,735.62 = 4,242.68/x
  3. Step 3: Cross multiply
    7,779.40x = 10,735.62 × 4,242.68
  4. Step 4: Simplify right side
    7,779.40x = 45,547,800.26
  5. Step 5: Solve for x
    x = 45,547,800.26/7,779.40
  6. Step 6: Final answer
    x = 5,854.92

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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.