Home / 8,688.40-11,985.58-5,496.32

Finding the Fourth Proportional to 8,688.40, 11,985.58 and 5,496.32

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Solution

The fourth proportional to 8,688.40, 11,985.58 and 5,496.32 is: 7,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.40 : 11,985.58 = 5,496.32 : x
  2. Step 2: Convert to fraction form
    8,688.40/11,985.58 = 5,496.32/x
  3. Step 3: Cross multiply
    8,688.40x = 11,985.58 × 5,496.32
  4. Step 4: Simplify right side
    8,688.40x = 65,876,555.58
  5. Step 5: Solve for x
    x = 65,876,555.58/8,688.40
  6. Step 6: Final answer
    x = 7,582.13

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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.