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Finding the Fourth Proportional to 5,328.94, 7,988.54 and 1,864.30

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Solution

The fourth proportional to 5,328.94, 7,988.54 and 1,864.30 is: 2,794.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.94 : 7,988.54 = 1,864.30 : x
  2. Step 2: Convert to fraction form
    5,328.94/7,988.54 = 1,864.30/x
  3. Step 3: Cross multiply
    5,328.94x = 7,988.54 × 1,864.30
  4. Step 4: Simplify right side
    5,328.94x = 14,893,035.12
  5. Step 5: Solve for x
    x = 14,893,035.12/5,328.94
  6. Step 6: Final answer
    x = 2,794.75

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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.