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Finding the Fourth Proportional to 2,458.76, 3,390.39 and 2,225.48

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Solution

The fourth proportional to 2,458.76, 3,390.39 and 2,225.48 is: 3,068.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.76 : 3,390.39 = 2,225.48 : x
  2. Step 2: Convert to fraction form
    2,458.76/3,390.39 = 2,225.48/x
  3. Step 3: Cross multiply
    2,458.76x = 3,390.39 × 2,225.48
  4. Step 4: Simplify right side
    2,458.76x = 7,545,228.19
  5. Step 5: Solve for x
    x = 7,545,228.19/2,458.76
  6. Step 6: Final answer
    x = 3,068.72

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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.