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Finding the Fourth Proportional to 3,888.60, 5,364.74 and 2,393.92

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Solution

The fourth proportional to 3,888.60, 5,364.74 and 2,393.92 is: 3,302.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.60 : 5,364.74 = 2,393.92 : x
  2. Step 2: Convert to fraction form
    3,888.60/5,364.74 = 2,393.92/x
  3. Step 3: Cross multiply
    3,888.60x = 5,364.74 × 2,393.92
  4. Step 4: Simplify right side
    3,888.60x = 12,842,746.41
  5. Step 5: Solve for x
    x = 12,842,746.41/3,888.60
  6. Step 6: Final answer
    x = 3,302.67

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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.