Home / 1,325.40-1,826.92-1,045.16

Finding the Fourth Proportional to 1,325.40, 1,826.92 and 1,045.16

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Solution

The fourth proportional to 1,325.40, 1,826.92 and 1,045.16 is: 1,440.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.40 : 1,826.92 = 1,045.16 : x
  2. Step 2: Convert to fraction form
    1,325.40/1,826.92 = 1,045.16/x
  3. Step 3: Cross multiply
    1,325.40x = 1,826.92 × 1,045.16
  4. Step 4: Simplify right side
    1,325.40x = 1,909,423.71
  5. Step 5: Solve for x
    x = 1,909,423.71/1,325.40
  6. Step 6: Final answer
    x = 1,440.64

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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.