Home / 2,349.85-3,242.70-1,405.08

Finding the Fourth Proportional to 2,349.85, 3,242.70 and 1,405.08

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Solution

The fourth proportional to 2,349.85, 3,242.70 and 1,405.08 is: 1,938.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,349.85 : 3,242.70 = 1,405.08 : x
  2. Step 2: Convert to fraction form
    2,349.85/3,242.70 = 1,405.08/x
  3. Step 3: Cross multiply
    2,349.85x = 3,242.70 × 1,405.08
  4. Step 4: Simplify right side
    2,349.85x = 4,556,263.63
  5. Step 5: Solve for x
    x = 4,556,263.63/2,349.85
  6. Step 6: Final answer
    x = 1,938.96

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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.