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Finding the Fourth Proportional to 6,431.79, 8,867.36 and 4,637.76

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Solution

The fourth proportional to 6,431.79, 8,867.36 and 4,637.76 is: 6,393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.79 : 8,867.36 = 4,637.76 : x
  2. Step 2: Convert to fraction form
    6,431.79/8,867.36 = 4,637.76/x
  3. Step 3: Cross multiply
    6,431.79x = 8,867.36 × 4,637.76
  4. Step 4: Simplify right side
    6,431.79x = 41,124,686.49
  5. Step 5: Solve for x
    x = 41,124,686.49/6,431.79
  6. Step 6: Final answer
    x = 6,393.98

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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.