Home / 4,078.80-6,118.08-1,157.40

Finding the Fourth Proportional to 4,078.80, 6,118.08 and 1,157.40

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Solution

The fourth proportional to 4,078.80, 6,118.08 and 1,157.40 is: 1,736.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.80 : 6,118.08 = 1,157.40 : x
  2. Step 2: Convert to fraction form
    4,078.80/6,118.08 = 1,157.40/x
  3. Step 3: Cross multiply
    4,078.80x = 6,118.08 × 1,157.40
  4. Step 4: Simplify right side
    4,078.80x = 7,081,065.79
  5. Step 5: Solve for x
    x = 7,081,065.79/4,078.80
  6. Step 6: Final answer
    x = 1,736.07

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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.