Home / 1,679.95-2,316.32-1,400.59

Finding the Fourth Proportional to 1,679.95, 2,316.32 and 1,400.59

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Solution

The fourth proportional to 1,679.95, 2,316.32 and 1,400.59 is: 1,931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.95 : 2,316.32 = 1,400.59 : x
  2. Step 2: Convert to fraction form
    1,679.95/2,316.32 = 1,400.59/x
  3. Step 3: Cross multiply
    1,679.95x = 2,316.32 × 1,400.59
  4. Step 4: Simplify right side
    1,679.95x = 3,244,207.63
  5. Step 5: Solve for x
    x = 3,244,207.63/1,679.95
  6. Step 6: Final answer
    x = 1,931.13

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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.