Home / 8,688.48-11,985.64-5,703.88

Finding the Fourth Proportional to 8,688.48, 11,985.64 and 5,703.88

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Solution

The fourth proportional to 8,688.48, 11,985.64 and 5,703.88 is: 7,868.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.48 : 11,985.64 = 5,703.88 : x
  2. Step 2: Convert to fraction form
    8,688.48/11,985.64 = 5,703.88/x
  3. Step 3: Cross multiply
    8,688.48x = 11,985.64 × 5,703.88
  4. Step 4: Simplify right side
    8,688.48x = 68,364,652.28
  5. Step 5: Solve for x
    x = 68,364,652.28/8,688.48
  6. Step 6: Final answer
    x = 7,868.42

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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.