Home / 3,430.08-5,145.12-1,886.40

Finding the Fourth Proportional to 3,430.08, 5,145.12 and 1,886.40

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Solution

The fourth proportional to 3,430.08, 5,145.12 and 1,886.40 is: 2,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.08 : 5,145.12 = 1,886.40 : x
  2. Step 2: Convert to fraction form
    3,430.08/5,145.12 = 1,886.40/x
  3. Step 3: Cross multiply
    3,430.08x = 5,145.12 × 1,886.40
  4. Step 4: Simplify right side
    3,430.08x = 9,705,754.37
  5. Step 5: Solve for x
    x = 9,705,754.37/3,430.08
  6. Step 6: Final answer
    x = 2,829.60

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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.