Home / 4,000.78-6,000.45-2,355.40

Finding the Fourth Proportional to 4,000.78, 6,000.45 and 2,355.40

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Solution

The fourth proportional to 4,000.78, 6,000.45 and 2,355.40 is: 3,532.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.78 : 6,000.45 = 2,355.40 : x
  2. Step 2: Convert to fraction form
    4,000.78/6,000.45 = 2,355.40/x
  3. Step 3: Cross multiply
    4,000.78x = 6,000.45 × 2,355.40
  4. Step 4: Simplify right side
    4,000.78x = 14,133,459.93
  5. Step 5: Solve for x
    x = 14,133,459.93/4,000.78
  6. Step 6: Final answer
    x = 3,532.68

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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.