Home / 4,986.48-6,881.04-2,890.20

Finding the Fourth Proportional to 4,986.48, 6,881.04 and 2,890.20

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Solution

The fourth proportional to 4,986.48, 6,881.04 and 2,890.20 is: 3,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.48 : 6,881.04 = 2,890.20 : x
  2. Step 2: Convert to fraction form
    4,986.48/6,881.04 = 2,890.20/x
  3. Step 3: Cross multiply
    4,986.48x = 6,881.04 × 2,890.20
  4. Step 4: Simplify right side
    4,986.48x = 19,887,581.81
  5. Step 5: Solve for x
    x = 19,887,581.81/4,986.48
  6. Step 6: Final answer
    x = 3,988.30

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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.