Home / 1,665.04-2,497.48-690.40

Finding the Fourth Proportional to 1,665.04, 2,497.48 and 690.40

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Solution

The fourth proportional to 1,665.04, 2,497.48 and 690.40 is: 1,035.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.04 : 2,497.48 = 690.40 : x
  2. Step 2: Convert to fraction form
    1,665.04/2,497.48 = 690.40/x
  3. Step 3: Cross multiply
    1,665.04x = 2,497.48 × 690.40
  4. Step 4: Simplify right side
    1,665.04x = 1,724,260.19
  5. Step 5: Solve for x
    x = 1,724,260.19/1,665.04
  6. Step 6: Final answer
    x = 1,035.57

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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.