Home / 9,780.04-13,498.88-6,427.41

Finding the Fourth Proportional to 9,780.04, 13,498.88 and 6,427.41

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Solution

The fourth proportional to 9,780.04, 13,498.88 and 6,427.41 is: 8,871.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.04 : 13,498.88 = 6,427.41 : x
  2. Step 2: Convert to fraction form
    9,780.04/13,498.88 = 6,427.41/x
  3. Step 3: Cross multiply
    9,780.04x = 13,498.88 × 6,427.41
  4. Step 4: Simplify right side
    9,780.04x = 86,762,836.30
  5. Step 5: Solve for x
    x = 86,762,836.30/9,780.04
  6. Step 6: Final answer
    x = 8,871.42

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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.