Home / 1,240.01-1,860.05-315.56

Finding the Fourth Proportional to 1,240.01, 1,860.05 and 315.56

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Solution

The fourth proportional to 1,240.01, 1,860.05 and 315.56 is: 473.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.01 : 1,860.05 = 315.56 : x
  2. Step 2: Convert to fraction form
    1,240.01/1,860.05 = 315.56/x
  3. Step 3: Cross multiply
    1,240.01x = 1,860.05 × 315.56
  4. Step 4: Simplify right side
    1,240.01x = 586,960.45
  5. Step 5: Solve for x
    x = 586,960.45/1,240.01
  6. Step 6: Final answer
    x = 473.35

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1.5x scale

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.