Home / 8,783.98-12,117.70-5,425.58

Finding the Fourth Proportional to 8,783.98, 12,117.70 and 5,425.58

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Solution

The fourth proportional to 8,783.98, 12,117.70 and 5,425.58 is: 7,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.98 : 12,117.70 = 5,425.58 : x
  2. Step 2: Convert to fraction form
    8,783.98/12,117.70 = 5,425.58/x
  3. Step 3: Cross multiply
    8,783.98x = 12,117.70 × 5,425.58
  4. Step 4: Simplify right side
    8,783.98x = 65,745,587.84
  5. Step 5: Solve for x
    x = 65,745,587.84/8,783.98
  6. Step 6: Final answer
    x = 7,484.72

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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.