Home / 4,178.12-5,762.74-3,000.40

Finding the Fourth Proportional to 4,178.12, 5,762.74 and 3,000.40

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Solution

The fourth proportional to 4,178.12, 5,762.74 and 3,000.40 is: 4,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,178.12 : 5,762.74 = 3,000.40 : x
  2. Step 2: Convert to fraction form
    4,178.12/5,762.74 = 3,000.40/x
  3. Step 3: Cross multiply
    4,178.12x = 5,762.74 × 3,000.40
  4. Step 4: Simplify right side
    4,178.12x = 17,290,525.10
  5. Step 5: Solve for x
    x = 17,290,525.10/4,178.12
  6. Step 6: Final answer
    x = 4,138.35

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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.