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Finding the Fourth Proportional to 5,836.80, 8,776.80 and 4,886.40

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Solution

The fourth proportional to 5,836.80, 8,776.80 and 4,886.40 is: 7,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,836.80 : 8,776.80 = 4,886.40 : x
  2. Step 2: Convert to fraction form
    5,836.80/8,776.80 = 4,886.40/x
  3. Step 3: Cross multiply
    5,836.80x = 8,776.80 × 4,886.40
  4. Step 4: Simplify right side
    5,836.80x = 42,886,955.52
  5. Step 5: Solve for x
    x = 42,886,955.52/5,836.80
  6. Step 6: Final answer
    x = 7,347.68

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1.5x scale

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.