Home / 2,913.40-4,019.70-1,864.60

Finding the Fourth Proportional to 2,913.40, 4,019.70 and 1,864.60

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Solution

The fourth proportional to 2,913.40, 4,019.70 and 1,864.60 is: 2,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.40 : 4,019.70 = 1,864.60 : x
  2. Step 2: Convert to fraction form
    2,913.40/4,019.70 = 1,864.60/x
  3. Step 3: Cross multiply
    2,913.40x = 4,019.70 × 1,864.60
  4. Step 4: Simplify right side
    2,913.40x = 7,495,132.62
  5. Step 5: Solve for x
    x = 7,495,132.62/2,913.40
  6. Step 6: Final answer
    x = 2,572.64

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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.