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Finding the Fourth Proportional to 4,508.50, 6,762.76 and 1,430.50

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Solution

The fourth proportional to 4,508.50, 6,762.76 and 1,430.50 is: 2,145.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,508.50 : 6,762.76 = 1,430.50 : x
  2. Step 2: Convert to fraction form
    4,508.50/6,762.76 = 1,430.50/x
  3. Step 3: Cross multiply
    4,508.50x = 6,762.76 × 1,430.50
  4. Step 4: Simplify right side
    4,508.50x = 9,674,128.18
  5. Step 5: Solve for x
    x = 9,674,128.18/4,508.50
  6. Step 6: Final answer
    x = 2,145.75

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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.