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Finding the Fourth Proportional to 7,870.66, 10,861.98 and 4,334.08

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Solution

The fourth proportional to 7,870.66, 10,861.98 and 4,334.08 is: 5,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.66 : 10,861.98 = 4,334.08 : x
  2. Step 2: Convert to fraction form
    7,870.66/10,861.98 = 4,334.08/x
  3. Step 3: Cross multiply
    7,870.66x = 10,861.98 × 4,334.08
  4. Step 4: Simplify right side
    7,870.66x = 47,076,690.28
  5. Step 5: Solve for x
    x = 47,076,690.28/7,870.66
  6. Step 6: Final answer
    x = 5,981.29

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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.