Home / 7,928.58-10,940.56-4,390.91

Finding the Fourth Proportional to 7,928.58, 10,940.56 and 4,390.91

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Solution

The fourth proportional to 7,928.58, 10,940.56 and 4,390.91 is: 6,058.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.58 : 10,940.56 = 4,390.91 : x
  2. Step 2: Convert to fraction form
    7,928.58/10,940.56 = 4,390.91/x
  3. Step 3: Cross multiply
    7,928.58x = 10,940.56 × 4,390.91
  4. Step 4: Simplify right side
    7,928.58x = 48,038,948.63
  5. Step 5: Solve for x
    x = 48,038,948.63/7,928.58
  6. Step 6: Final answer
    x = 6,058.96

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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.