Home / 2,477.20-3,715.80-2,208.40

Finding the Fourth Proportional to 2,477.20, 3,715.80 and 2,208.40

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Solution

The fourth proportional to 2,477.20, 3,715.80 and 2,208.40 is: 3,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,477.20 : 3,715.80 = 2,208.40 : x
  2. Step 2: Convert to fraction form
    2,477.20/3,715.80 = 2,208.40/x
  3. Step 3: Cross multiply
    2,477.20x = 3,715.80 × 2,208.40
  4. Step 4: Simplify right side
    2,477.20x = 8,205,972.72
  5. Step 5: Solve for x
    x = 8,205,972.72/2,477.20
  6. Step 6: Final answer
    x = 3,312.60

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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.