Home / 1,551.23-2,140.62-887.93

Finding the Fourth Proportional to 1,551.23, 2,140.62 and 887.93

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Solution

The fourth proportional to 1,551.23, 2,140.62 and 887.93 is: 1,225.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.23 : 2,140.62 = 887.93 : x
  2. Step 2: Convert to fraction form
    1,551.23/2,140.62 = 887.93/x
  3. Step 3: Cross multiply
    1,551.23x = 2,140.62 × 887.93
  4. Step 4: Simplify right side
    1,551.23x = 1,900,720.72
  5. Step 5: Solve for x
    x = 1,900,720.72/1,551.23
  6. Step 6: Final answer
    x = 1,225.30

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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.