Home / 2,478.23-3,420.34-1,534.18

Finding the Fourth Proportional to 2,478.23, 3,420.34 and 1,534.18

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Solution

The fourth proportional to 2,478.23, 3,420.34 and 1,534.18 is: 2,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.23 : 3,420.34 = 1,534.18 : x
  2. Step 2: Convert to fraction form
    2,478.23/3,420.34 = 1,534.18/x
  3. Step 3: Cross multiply
    2,478.23x = 3,420.34 × 1,534.18
  4. Step 4: Simplify right side
    2,478.23x = 5,247,409.55
  5. Step 5: Solve for x
    x = 5,247,409.55/2,478.23
  6. Step 6: Final answer
    x = 2,117.40

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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.