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Finding the Fourth Proportional to 8,611.34, 12,916.98 and 5,688.95

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Solution

The fourth proportional to 8,611.34, 12,916.98 and 5,688.95 is: 8,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.34 : 12,916.98 = 5,688.95 : x
  2. Step 2: Convert to fraction form
    8,611.34/12,916.98 = 5,688.95/x
  3. Step 3: Cross multiply
    8,611.34x = 12,916.98 × 5,688.95
  4. Step 4: Simplify right side
    8,611.34x = 73,483,988.79
  5. Step 5: Solve for x
    x = 73,483,988.79/8,611.34
  6. Step 6: Final answer
    x = 8,533.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.