Home / 1,728.02-2,591.95-631.89

Finding the Fourth Proportional to 1,728.02, 2,591.95 and 631.89

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Solution

The fourth proportional to 1,728.02, 2,591.95 and 631.89 is: 947.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.02 : 2,591.95 = 631.89 : x
  2. Step 2: Convert to fraction form
    1,728.02/2,591.95 = 631.89/x
  3. Step 3: Cross multiply
    1,728.02x = 2,591.95 × 631.89
  4. Step 4: Simplify right side
    1,728.02x = 1,637,827.29
  5. Step 5: Solve for x
    x = 1,637,827.29/1,728.02
  6. Step 6: Final answer
    x = 947.81

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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.