Home / 8,420.94-11,612.30-5,587.32

Finding the Fourth Proportional to 8,420.94, 11,612.30 and 5,587.32

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Solution

The fourth proportional to 8,420.94, 11,612.30 and 5,587.32 is: 7,704.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.94 : 11,612.30 = 5,587.32 : x
  2. Step 2: Convert to fraction form
    8,420.94/11,612.30 = 5,587.32/x
  3. Step 3: Cross multiply
    8,420.94x = 11,612.30 × 5,587.32
  4. Step 4: Simplify right side
    8,420.94x = 64,881,608.10
  5. Step 5: Solve for x
    x = 64,881,608.10/8,420.94
  6. Step 6: Final answer
    x = 7,704.79

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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.