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Finding the Fourth Proportional to 4,908.60, 7,352.10 and 1,985.40

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Solution

The fourth proportional to 4,908.60, 7,352.10 and 1,985.40 is: 2,973.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,908.60 : 7,352.10 = 1,985.40 : x
  2. Step 2: Convert to fraction form
    4,908.60/7,352.10 = 1,985.40/x
  3. Step 3: Cross multiply
    4,908.60x = 7,352.10 × 1,985.40
  4. Step 4: Simplify right side
    4,908.60x = 14,596,859.34
  5. Step 5: Solve for x
    x = 14,596,859.34/4,908.60
  6. Step 6: Final answer
    x = 2,973.73

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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.