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Finding the Fourth Proportional to 10,430.03, 15,643.39 and 3,410

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Solution

The fourth proportional to 10,430.03, 15,643.39 and 3,410 is: 5,114.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.03 : 15,643.39 = 3,410 : x
  2. Step 2: Convert to fraction form
    10,430.03/15,643.39 = 3,410/x
  3. Step 3: Cross multiply
    10,430.03x = 15,643.39 × 3,410
  4. Step 4: Simplify right side
    10,430.03x = 53,343,959.90
  5. Step 5: Solve for x
    x = 53,343,959.90/10,430.03
  6. Step 6: Final answer
    x = 5,114.46

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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.