Home / 1,700.70-2,345.61-1,405.45

Finding the Fourth Proportional to 1,700.70, 2,345.61 and 1,405.45

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Solution

The fourth proportional to 1,700.70, 2,345.61 and 1,405.45 is: 1,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,700.70 : 2,345.61 = 1,405.45 : x
  2. Step 2: Convert to fraction form
    1,700.70/2,345.61 = 1,405.45/x
  3. Step 3: Cross multiply
    1,700.70x = 2,345.61 × 1,405.45
  4. Step 4: Simplify right side
    1,700.70x = 3,296,637.87
  5. Step 5: Solve for x
    x = 3,296,637.87/1,700.70
  6. Step 6: Final answer
    x = 1,938.40

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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.