Home / 8,688.89-13,038.21-3,146.87

Finding the Fourth Proportional to 8,688.89, 13,038.21 and 3,146.87

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Solution

The fourth proportional to 8,688.89, 13,038.21 and 3,146.87 is: 4,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.89 : 13,038.21 = 3,146.87 : x
  2. Step 2: Convert to fraction form
    8,688.89/13,038.21 = 3,146.87/x
  3. Step 3: Cross multiply
    8,688.89x = 13,038.21 × 3,146.87
  4. Step 4: Simplify right side
    8,688.89x = 41,029,486.71
  5. Step 5: Solve for x
    x = 41,029,486.71/8,688.89
  6. Step 6: Final answer
    x = 4,722.07

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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.