Home / 1,465.10-2,188.74-1,117.46

Finding the Fourth Proportional to 1,465.10, 2,188.74 and 1,117.46

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Solution

The fourth proportional to 1,465.10, 2,188.74 and 1,117.46 is: 1,669.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.10 : 2,188.74 = 1,117.46 : x
  2. Step 2: Convert to fraction form
    1,465.10/2,188.74 = 1,117.46/x
  3. Step 3: Cross multiply
    1,465.10x = 2,188.74 × 1,117.46
  4. Step 4: Simplify right side
    1,465.10x = 2,445,818.46
  5. Step 5: Solve for x
    x = 2,445,818.46/1,465.10
  6. Step 6: Final answer
    x = 1,669.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.