Home / 9,989.40-14,966.10-4,783.80

Finding the Fourth Proportional to 9,989.40, 14,966.10 and 4,783.80

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Solution

The fourth proportional to 9,989.40, 14,966.10 and 4,783.80 is: 7,167.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.40 : 14,966.10 = 4,783.80 : x
  2. Step 2: Convert to fraction form
    9,989.40/14,966.10 = 4,783.80/x
  3. Step 3: Cross multiply
    9,989.40x = 14,966.10 × 4,783.80
  4. Step 4: Simplify right side
    9,989.40x = 71,594,829.18
  5. Step 5: Solve for x
    x = 71,594,829.18/9,989.40
  6. Step 6: Final answer
    x = 7,167.08

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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.