Home / 1,124.07-1,686.20-383.46

Finding the Fourth Proportional to 1,124.07, 1,686.20 and 383.46

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Solution

The fourth proportional to 1,124.07, 1,686.20 and 383.46 is: 575.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124.07 : 1,686.20 = 383.46 : x
  2. Step 2: Convert to fraction form
    1,124.07/1,686.20 = 383.46/x
  3. Step 3: Cross multiply
    1,124.07x = 1,686.20 × 383.46
  4. Step 4: Simplify right side
    1,124.07x = 646,582.01
  5. Step 5: Solve for x
    x = 646,582.01/1,124.07
  6. Step 6: Final answer
    x = 575.21

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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.