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Finding the Fourth Proportional to 6,291, 8,678.34 and 4,700.16

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Solution

The fourth proportional to 6,291, 8,678.34 and 4,700.16 is: 6,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291 : 8,678.34 = 4,700.16 : x
  2. Step 2: Convert to fraction form
    6,291/8,678.34 = 4,700.16/x
  3. Step 3: Cross multiply
    6,291x = 8,678.34 × 4,700.16
  4. Step 4: Simplify right side
    6,291x = 40,789,586.53
  5. Step 5: Solve for x
    x = 40,789,586.53/6,291
  6. Step 6: Final answer
    x = 6,483.80

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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.