Home / 2,421.79-3,341.99-1,345.05

Finding the Fourth Proportional to 2,421.79, 3,341.99 and 1,345.05

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Solution

The fourth proportional to 2,421.79, 3,341.99 and 1,345.05 is: 1,856.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.79 : 3,341.99 = 1,345.05 : x
  2. Step 2: Convert to fraction form
    2,421.79/3,341.99 = 1,345.05/x
  3. Step 3: Cross multiply
    2,421.79x = 3,341.99 × 1,345.05
  4. Step 4: Simplify right side
    2,421.79x = 4,495,147.01
  5. Step 5: Solve for x
    x = 4,495,147.01/2,421.79
  6. Step 6: Final answer
    x = 1,856.13

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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.