Home / 2,386.80-3,579.60-655.56

Finding the Fourth Proportional to 2,386.80, 3,579.60 and 655.56

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Solution

The fourth proportional to 2,386.80, 3,579.60 and 655.56 is: 983.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.80 : 3,579.60 = 655.56 : x
  2. Step 2: Convert to fraction form
    2,386.80/3,579.60 = 655.56/x
  3. Step 3: Cross multiply
    2,386.80x = 3,579.60 × 655.56
  4. Step 4: Simplify right side
    2,386.80x = 2,346,642.58
  5. Step 5: Solve for x
    x = 2,346,642.58/2,386.80
  6. Step 6: Final answer
    x = 983.18

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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.