Home / 6,678.60-9,212.92-5,421.04

Finding the Fourth Proportional to 6,678.60, 9,212.92 and 5,421.04

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Solution

The fourth proportional to 6,678.60, 9,212.92 and 5,421.04 is: 7,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,678.60 : 9,212.92 = 5,421.04 : x
  2. Step 2: Convert to fraction form
    6,678.60/9,212.92 = 5,421.04/x
  3. Step 3: Cross multiply
    6,678.60x = 9,212.92 × 5,421.04
  4. Step 4: Simplify right side
    6,678.60x = 49,943,607.84
  5. Step 5: Solve for x
    x = 49,943,607.84/6,678.60
  6. Step 6: Final answer
    x = 7,478.16

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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.