Home / 8,688.19-11,989.74-4,709.30

Finding the Fourth Proportional to 8,688.19, 11,989.74 and 4,709.30

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Solution

The fourth proportional to 8,688.19, 11,989.74 and 4,709.30 is: 6,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.19 : 11,989.74 = 4,709.30 : x
  2. Step 2: Convert to fraction form
    8,688.19/11,989.74 = 4,709.30/x
  3. Step 3: Cross multiply
    8,688.19x = 11,989.74 × 4,709.30
  4. Step 4: Simplify right side
    8,688.19x = 56,463,259.04
  5. Step 5: Solve for x
    x = 56,463,259.04/8,688.19
  6. Step 6: Final answer
    x = 6,498.85

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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.