Home / 2,913.48-4,020.60-1,587.18

Finding the Fourth Proportional to 2,913.48, 4,020.60 and 1,587.18

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Solution

The fourth proportional to 2,913.48, 4,020.60 and 1,587.18 is: 2,190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.48 : 4,020.60 = 1,587.18 : x
  2. Step 2: Convert to fraction form
    2,913.48/4,020.60 = 1,587.18/x
  3. Step 3: Cross multiply
    2,913.48x = 4,020.60 × 1,587.18
  4. Step 4: Simplify right side
    2,913.48x = 6,381,430.99
  5. Step 5: Solve for x
    x = 6,381,430.99/2,913.48
  6. Step 6: Final answer
    x = 2,190.31

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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.