Home / 1,506.70-2,079.81-947.33

Finding the Fourth Proportional to 1,506.70, 2,079.81 and 947.33

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Solution

The fourth proportional to 1,506.70, 2,079.81 and 947.33 is: 1,307.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,506.70 : 2,079.81 = 947.33 : x
  2. Step 2: Convert to fraction form
    1,506.70/2,079.81 = 947.33/x
  3. Step 3: Cross multiply
    1,506.70x = 2,079.81 × 947.33
  4. Step 4: Simplify right side
    1,506.70x = 1,970,263.81
  5. Step 5: Solve for x
    x = 1,970,263.81/1,506.70
  6. Step 6: Final answer
    x = 1,307.67

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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.