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Finding the Fourth Proportional to 4,701.40, 7,052.10 and 4,485.40

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Solution

The fourth proportional to 4,701.40, 7,052.10 and 4,485.40 is: 6,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,701.40 : 7,052.10 = 4,485.40 : x
  2. Step 2: Convert to fraction form
    4,701.40/7,052.10 = 4,485.40/x
  3. Step 3: Cross multiply
    4,701.40x = 7,052.10 × 4,485.40
  4. Step 4: Simplify right side
    4,701.40x = 31,631,489.34
  5. Step 5: Solve for x
    x = 31,631,489.34/4,701.40
  6. Step 6: Final answer
    x = 6,728.10

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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.