Home / 9,177.40-12,664.78-4,985.64

Finding the Fourth Proportional to 9,177.40, 12,664.78 and 4,985.64

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Solution

The fourth proportional to 9,177.40, 12,664.78 and 4,985.64 is: 6,880.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,177.40 : 12,664.78 = 4,985.64 : x
  2. Step 2: Convert to fraction form
    9,177.40/12,664.78 = 4,985.64/x
  3. Step 3: Cross multiply
    9,177.40x = 12,664.78 × 4,985.64
  4. Step 4: Simplify right side
    9,177.40x = 63,142,033.76
  5. Step 5: Solve for x
    x = 63,142,033.76/9,177.40
  6. Step 6: Final answer
    x = 6,880.17

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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.