Home / 4,070.78-5,615.90-2,389.22

Finding the Fourth Proportional to 4,070.78, 5,615.90 and 2,389.22

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Solution

The fourth proportional to 4,070.78, 5,615.90 and 2,389.22 is: 3,296.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,070.78 : 5,615.90 = 2,389.22 : x
  2. Step 2: Convert to fraction form
    4,070.78/5,615.90 = 2,389.22/x
  3. Step 3: Cross multiply
    4,070.78x = 5,615.90 × 2,389.22
  4. Step 4: Simplify right side
    4,070.78x = 13,417,620.60
  5. Step 5: Solve for x
    x = 13,417,620.60/4,070.78
  6. Step 6: Final answer
    x = 3,296.08

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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.