Home / 1,902.08-2,624.52-1,312.40

Finding the Fourth Proportional to 1,902.08, 2,624.52 and 1,312.40

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Solution

The fourth proportional to 1,902.08, 2,624.52 and 1,312.40 is: 1,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.08 : 2,624.52 = 1,312.40 : x
  2. Step 2: Convert to fraction form
    1,902.08/2,624.52 = 1,312.40/x
  3. Step 3: Cross multiply
    1,902.08x = 2,624.52 × 1,312.40
  4. Step 4: Simplify right side
    1,902.08x = 3,444,420.05
  5. Step 5: Solve for x
    x = 3,444,420.05/1,902.08
  6. Step 6: Final answer
    x = 1,810.87

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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.