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Finding the Fourth Proportional to 6,411.52, 8,851.98 and 5,235.40

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Solution

The fourth proportional to 6,411.52, 8,851.98 and 5,235.40 is: 7,228.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,411.52 : 8,851.98 = 5,235.40 : x
  2. Step 2: Convert to fraction form
    6,411.52/8,851.98 = 5,235.40/x
  3. Step 3: Cross multiply
    6,411.52x = 8,851.98 × 5,235.40
  4. Step 4: Simplify right side
    6,411.52x = 46,343,656.09
  5. Step 5: Solve for x
    x = 46,343,656.09/6,411.52
  6. Step 6: Final answer
    x = 7,228.19

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1.5x scale

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.