Home / 7,890.64-11,835.90-6,498.34

Finding the Fourth Proportional to 7,890.64, 11,835.90 and 6,498.34

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Solution

The fourth proportional to 7,890.64, 11,835.90 and 6,498.34 is: 9,747.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.64 : 11,835.90 = 6,498.34 : x
  2. Step 2: Convert to fraction form
    7,890.64/11,835.90 = 6,498.34/x
  3. Step 3: Cross multiply
    7,890.64x = 11,835.90 × 6,498.34
  4. Step 4: Simplify right side
    7,890.64x = 76,913,702.41
  5. Step 5: Solve for x
    x = 76,913,702.41/7,890.64
  6. Step 6: Final answer
    x = 9,747.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.