Home / 1,923.60-2,885.40-555.60

Finding the Fourth Proportional to 1,923.60, 2,885.40 and 555.60

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Solution

The fourth proportional to 1,923.60, 2,885.40 and 555.60 is: 833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923.60 : 2,885.40 = 555.60 : x
  2. Step 2: Convert to fraction form
    1,923.60/2,885.40 = 555.60/x
  3. Step 3: Cross multiply
    1,923.60x = 2,885.40 × 555.60
  4. Step 4: Simplify right side
    1,923.60x = 1,603,128.24
  5. Step 5: Solve for x
    x = 1,603,128.24/1,923.60
  6. Step 6: Final answer
    x = 833.40

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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.