Home / 1,913.56-2,870.28-545.56

Finding the Fourth Proportional to 1,913.56, 2,870.28 and 545.56

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Solution

The fourth proportional to 1,913.56, 2,870.28 and 545.56 is: 818.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.56 : 2,870.28 = 545.56 : x
  2. Step 2: Convert to fraction form
    1,913.56/2,870.28 = 545.56/x
  3. Step 3: Cross multiply
    1,913.56x = 2,870.28 × 545.56
  4. Step 4: Simplify right side
    1,913.56x = 1,565,909.96
  5. Step 5: Solve for x
    x = 1,565,909.96/1,913.56
  6. Step 6: Final answer
    x = 818.32

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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.