Home / 7,920.39-11,880.59-2,374.32

Finding the Fourth Proportional to 7,920.39, 11,880.59 and 2,374.32

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Solution

The fourth proportional to 7,920.39, 11,880.59 and 2,374.32 is: 3,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.39 : 11,880.59 = 2,374.32 : x
  2. Step 2: Convert to fraction form
    7,920.39/11,880.59 = 2,374.32/x
  3. Step 3: Cross multiply
    7,920.39x = 11,880.59 × 2,374.32
  4. Step 4: Simplify right side
    7,920.39x = 28,208,322.45
  5. Step 5: Solve for x
    x = 28,208,322.45/7,920.39
  6. Step 6: Final answer
    x = 3,561.48

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Similar ratio
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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.