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Finding the Fourth Proportional to 6,870.87, 9,484.08 and 4,887.18

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Solution

The fourth proportional to 6,870.87, 9,484.08 and 4,887.18 is: 6,745.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.87 : 9,484.08 = 4,887.18 : x
  2. Step 2: Convert to fraction form
    6,870.87/9,484.08 = 4,887.18/x
  3. Step 3: Cross multiply
    6,870.87x = 9,484.08 × 4,887.18
  4. Step 4: Simplify right side
    6,870.87x = 46,350,406.09
  5. Step 5: Solve for x
    x = 46,350,406.09/6,870.87
  6. Step 6: Final answer
    x = 6,745.93

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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.