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Finding the Fourth Proportional to 4,871.70, 7,256.61 and 4,807.11

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Solution

The fourth proportional to 4,871.70, 7,256.61 and 4,807.11 is: 7,160.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.70 : 7,256.61 = 4,807.11 : x
  2. Step 2: Convert to fraction form
    4,871.70/7,256.61 = 4,807.11/x
  3. Step 3: Cross multiply
    4,871.70x = 7,256.61 × 4,807.11
  4. Step 4: Simplify right side
    4,871.70x = 34,883,322.50
  5. Step 5: Solve for x
    x = 34,883,322.50/4,871.70
  6. Step 6: Final answer
    x = 7,160.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.