Home / 7,928.08-10,940.04-4,390.36

Finding the Fourth Proportional to 7,928.08, 10,940.04 and 4,390.36

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Solution

The fourth proportional to 7,928.08, 10,940.04 and 4,390.36 is: 6,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.08 : 10,940.04 = 4,390.36 : x
  2. Step 2: Convert to fraction form
    7,928.08/10,940.04 = 4,390.36/x
  3. Step 3: Cross multiply
    7,928.08x = 10,940.04 × 4,390.36
  4. Step 4: Simplify right side
    7,928.08x = 48,030,714.01
  5. Step 5: Solve for x
    x = 48,030,714.01/7,928.08
  6. Step 6: Final answer
    x = 6,058.30

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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.