Home / 9,985.34-13,784.20-6,450.28

Finding the Fourth Proportional to 9,985.34, 13,784.20 and 6,450.28

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Solution

The fourth proportional to 9,985.34, 13,784.20 and 6,450.28 is: 8,904.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.34 : 13,784.20 = 6,450.28 : x
  2. Step 2: Convert to fraction form
    9,985.34/13,784.20 = 6,450.28/x
  3. Step 3: Cross multiply
    9,985.34x = 13,784.20 × 6,450.28
  4. Step 4: Simplify right side
    9,985.34x = 88,911,949.58
  5. Step 5: Solve for x
    x = 88,911,949.58/9,985.34
  6. Step 6: Final answer
    x = 8,904.25

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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.