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Finding the Fourth Proportional to 4,985.15, 7,483.19 and 2,798.15

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Solution

The fourth proportional to 4,985.15, 7,483.19 and 2,798.15 is: 4,200.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.15 : 7,483.19 = 2,798.15 : x
  2. Step 2: Convert to fraction form
    4,985.15/7,483.19 = 2,798.15/x
  3. Step 3: Cross multiply
    4,985.15x = 7,483.19 × 2,798.15
  4. Step 4: Simplify right side
    4,985.15x = 20,939,036.69
  5. Step 5: Solve for x
    x = 20,939,036.69/4,985.15
  6. Step 6: Final answer
    x = 4,200.29

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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.