Home / 1,615.08-2,228.22-916.32

Finding the Fourth Proportional to 1,615.08, 2,228.22 and 916.32

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Solution

The fourth proportional to 1,615.08, 2,228.22 and 916.32 is: 1,264.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.08 : 2,228.22 = 916.32 : x
  2. Step 2: Convert to fraction form
    1,615.08/2,228.22 = 916.32/x
  3. Step 3: Cross multiply
    1,615.08x = 2,228.22 × 916.32
  4. Step 4: Simplify right side
    1,615.08x = 2,041,762.55
  5. Step 5: Solve for x
    x = 2,041,762.55/1,615.08
  6. Step 6: Final answer
    x = 1,264.19

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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.