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Finding the Fourth Proportional to 8,580.39, 12,870.59 and 3,030.72

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Solution

The fourth proportional to 8,580.39, 12,870.59 and 3,030.72 is: 4,546.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,580.39 : 12,870.59 = 3,030.72 : x
  2. Step 2: Convert to fraction form
    8,580.39/12,870.59 = 3,030.72/x
  3. Step 3: Cross multiply
    8,580.39x = 12,870.59 × 3,030.72
  4. Step 4: Simplify right side
    8,580.39x = 39,007,139.37
  5. Step 5: Solve for x
    x = 39,007,139.37/8,580.39
  6. Step 6: Final answer
    x = 4,546.08

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Similar ratio
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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.