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Finding the Fourth Proportional to 6,485.99, 9,730.43 and 1,868.63

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Solution

The fourth proportional to 6,485.99, 9,730.43 and 1,868.63 is: 2,803.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.99 : 9,730.43 = 1,868.63 : x
  2. Step 2: Convert to fraction form
    6,485.99/9,730.43 = 1,868.63/x
  3. Step 3: Cross multiply
    6,485.99x = 9,730.43 × 1,868.63
  4. Step 4: Simplify right side
    6,485.99x = 18,182,515.42
  5. Step 5: Solve for x
    x = 18,182,515.42/6,485.99
  6. Step 6: Final answer
    x = 2,803.35

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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.