Home / 1,817.09-2,507.65-1,031.21

Finding the Fourth Proportional to 1,817.09, 2,507.65 and 1,031.21

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Solution

The fourth proportional to 1,817.09, 2,507.65 and 1,031.21 is: 1,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.09 : 2,507.65 = 1,031.21 : x
  2. Step 2: Convert to fraction form
    1,817.09/2,507.65 = 1,031.21/x
  3. Step 3: Cross multiply
    1,817.09x = 2,507.65 × 1,031.21
  4. Step 4: Simplify right side
    1,817.09x = 2,585,898.64
  5. Step 5: Solve for x
    x = 2,585,898.64/1,817.09
  6. Step 6: Final answer
    x = 1,423.10

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1.5x scale

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.