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Finding the Fourth Proportional to 6,471.51, 8,931.65 and 3,955.08

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Solution

The fourth proportional to 6,471.51, 8,931.65 and 3,955.08 is: 5,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,471.51 : 8,931.65 = 3,955.08 : x
  2. Step 2: Convert to fraction form
    6,471.51/8,931.65 = 3,955.08/x
  3. Step 3: Cross multiply
    6,471.51x = 8,931.65 × 3,955.08
  4. Step 4: Simplify right side
    6,471.51x = 35,325,390.28
  5. Step 5: Solve for x
    x = 35,325,390.28/6,471.51
  6. Step 6: Final answer
    x = 5,458.60

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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.