Home / 7,394.60-11,088.55-2,128.40

Finding the Fourth Proportional to 7,394.60, 11,088.55 and 2,128.40

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Solution

The fourth proportional to 7,394.60, 11,088.55 and 2,128.40 is: 3,191.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,394.60 : 11,088.55 = 2,128.40 : x
  2. Step 2: Convert to fraction form
    7,394.60/11,088.55 = 2,128.40/x
  3. Step 3: Cross multiply
    7,394.60x = 11,088.55 × 2,128.40
  4. Step 4: Simplify right side
    7,394.60x = 23,600,869.82
  5. Step 5: Solve for x
    x = 23,600,869.82/7,394.60
  6. Step 6: Final answer
    x = 3,191.64

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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.