Home / 5,785.88-7,987.95-4,386.20

Finding the Fourth Proportional to 5,785.88, 7,987.95 and 4,386.20

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Solution

The fourth proportional to 5,785.88, 7,987.95 and 4,386.20 is: 6,055.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,785.88 : 7,987.95 = 4,386.20 : x
  2. Step 2: Convert to fraction form
    5,785.88/7,987.95 = 4,386.20/x
  3. Step 3: Cross multiply
    5,785.88x = 7,987.95 × 4,386.20
  4. Step 4: Simplify right side
    5,785.88x = 35,036,706.35
  5. Step 5: Solve for x
    x = 35,036,706.35/5,785.88
  6. Step 6: Final answer
    x = 6,055.56

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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.