Home / 1,551.32-2,140.68-888.02

Finding the Fourth Proportional to 1,551.32, 2,140.68 and 888.02

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Solution

The fourth proportional to 1,551.32, 2,140.68 and 888.02 is: 1,225.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.32 : 2,140.68 = 888.02 : x
  2. Step 2: Convert to fraction form
    1,551.32/2,140.68 = 888.02/x
  3. Step 3: Cross multiply
    1,551.32x = 2,140.68 × 888.02
  4. Step 4: Simplify right side
    1,551.32x = 1,900,966.65
  5. Step 5: Solve for x
    x = 1,900,966.65/1,551.32
  6. Step 6: Final answer
    x = 1,225.39

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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.