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Finding the Fourth Proportional to 8,529.40, 12,807.30 and 4,641.40

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Solution

The fourth proportional to 8,529.40, 12,807.30 and 4,641.40 is: 6,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,529.40 : 12,807.30 = 4,641.40 : x
  2. Step 2: Convert to fraction form
    8,529.40/12,807.30 = 4,641.40/x
  3. Step 3: Cross multiply
    8,529.40x = 12,807.30 × 4,641.40
  4. Step 4: Simplify right side
    8,529.40x = 59,443,802.22
  5. Step 5: Solve for x
    x = 59,443,802.22/8,529.40
  6. Step 6: Final answer
    x = 6,969.28

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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.