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Finding the Fourth Proportional to 7,030, 9,701.16 and 3,886.20

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Solution

The fourth proportional to 7,030, 9,701.16 and 3,886.20 is: 5,362.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,030 : 9,701.16 = 3,886.20 : x
  2. Step 2: Convert to fraction form
    7,030/9,701.16 = 3,886.20/x
  3. Step 3: Cross multiply
    7,030x = 9,701.16 × 3,886.20
  4. Step 4: Simplify right side
    7,030x = 37,700,647.99
  5. Step 5: Solve for x
    x = 37,700,647.99/7,030
  6. Step 6: Final answer
    x = 5,362.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.