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Finding the Fourth Proportional to 5,812.48, 8,718.72 and 1,430

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Solution

The fourth proportional to 5,812.48, 8,718.72 and 1,430 is: 2,145

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812.48 : 8,718.72 = 1,430 : x
  2. Step 2: Convert to fraction form
    5,812.48/8,718.72 = 1,430/x
  3. Step 3: Cross multiply
    5,812.48x = 8,718.72 × 1,430
  4. Step 4: Simplify right side
    5,812.48x = 12,467,769.60
  5. Step 5: Solve for x
    x = 12,467,769.60/5,812.48
  6. Step 6: Final answer
    x = 2,145

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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.