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Finding the Fourth Proportional to 4,985.54, 7,478.32 and 4,681.07

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Solution

The fourth proportional to 4,985.54, 7,478.32 and 4,681.07 is: 7,021.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.54 : 7,478.32 = 4,681.07 : x
  2. Step 2: Convert to fraction form
    4,985.54/7,478.32 = 4,681.07/x
  3. Step 3: Cross multiply
    4,985.54x = 7,478.32 × 4,681.07
  4. Step 4: Simplify right side
    4,985.54x = 35,006,539.40
  5. Step 5: Solve for x
    x = 35,006,539.40/4,985.54
  6. Step 6: Final answer
    x = 7,021.61

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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.