Home / 9,878.58-13,634.51-6,521.81

Finding the Fourth Proportional to 9,878.58, 13,634.51 and 6,521.81

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Solution

The fourth proportional to 9,878.58, 13,634.51 and 6,521.81 is: 9,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,878.58 : 13,634.51 = 6,521.81 : x
  2. Step 2: Convert to fraction form
    9,878.58/13,634.51 = 6,521.81/x
  3. Step 3: Cross multiply
    9,878.58x = 13,634.51 × 6,521.81
  4. Step 4: Simplify right side
    9,878.58x = 88,921,582.88
  5. Step 5: Solve for x
    x = 88,921,582.88/9,878.58
  6. Step 6: Final answer
    x = 9,001.45

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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.