Home / 4,911.48-7,368.86-1,988.20

Finding the Fourth Proportional to 4,911.48, 7,368.86 and 1,988.20

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Solution

The fourth proportional to 4,911.48, 7,368.86 and 1,988.20 is: 2,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.48 : 7,368.86 = 1,988.20 : x
  2. Step 2: Convert to fraction form
    4,911.48/7,368.86 = 1,988.20/x
  3. Step 3: Cross multiply
    4,911.48x = 7,368.86 × 1,988.20
  4. Step 4: Simplify right side
    4,911.48x = 14,650,767.45
  5. Step 5: Solve for x
    x = 14,650,767.45/4,911.48
  6. Step 6: Final answer
    x = 2,982.96

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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.