Home / 1,437.37-2,155.90-889.40

Finding the Fourth Proportional to 1,437.37, 2,155.90 and 889.40

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Solution

The fourth proportional to 1,437.37, 2,155.90 and 889.40 is: 1,334.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.37 : 2,155.90 = 889.40 : x
  2. Step 2: Convert to fraction form
    1,437.37/2,155.90 = 889.40/x
  3. Step 3: Cross multiply
    1,437.37x = 2,155.90 × 889.40
  4. Step 4: Simplify right side
    1,437.37x = 1,917,457.46
  5. Step 5: Solve for x
    x = 1,917,457.46/1,437.37
  6. Step 6: Final answer
    x = 1,334.00

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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.