Home / 8,688.04-11,989.36-4,911.07

Finding the Fourth Proportional to 8,688.04, 11,989.36 and 4,911.07

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Solution

The fourth proportional to 8,688.04, 11,989.36 and 4,911.07 is: 6,777.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.04 : 11,989.36 = 4,911.07 : x
  2. Step 2: Convert to fraction form
    8,688.04/11,989.36 = 4,911.07/x
  3. Step 3: Cross multiply
    8,688.04x = 11,989.36 × 4,911.07
  4. Step 4: Simplify right side
    8,688.04x = 58,880,543.96
  5. Step 5: Solve for x
    x = 58,880,543.96/8,688.04
  6. Step 6: Final answer
    x = 6,777.20

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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.