Home / 7,779.90-11,640.68-4,319.58

Finding the Fourth Proportional to 7,779.90, 11,640.68 and 4,319.58

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Solution

The fourth proportional to 7,779.90, 11,640.68 and 4,319.58 is: 6,463.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.90 : 11,640.68 = 4,319.58 : x
  2. Step 2: Convert to fraction form
    7,779.90/11,640.68 = 4,319.58/x
  3. Step 3: Cross multiply
    7,779.90x = 11,640.68 × 4,319.58
  4. Step 4: Simplify right side
    7,779.90x = 50,282,848.51
  5. Step 5: Solve for x
    x = 50,282,848.51/7,779.90
  6. Step 6: Final answer
    x = 6,463.17

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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.