Home / 1,522.03-2,100.40-858.88

Finding the Fourth Proportional to 1,522.03, 2,100.40 and 858.88

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Solution

The fourth proportional to 1,522.03, 2,100.40 and 858.88 is: 1,185.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.03 : 2,100.40 = 858.88 : x
  2. Step 2: Convert to fraction form
    1,522.03/2,100.40 = 858.88/x
  3. Step 3: Cross multiply
    1,522.03x = 2,100.40 × 858.88
  4. Step 4: Simplify right side
    1,522.03x = 1,803,984.15
  5. Step 5: Solve for x
    x = 1,803,984.15/1,522.03
  6. Step 6: Final answer
    x = 1,185.25

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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.